Fixing Common UE5 Issues! Changes in 5.0

[@WilliamFaucher]

A bit of a bonus tip, if you're experiencing bugs or crashes, ask yourself if you simply updated from Preview 1-2, directly to the full build. If you did, consider removing that, and installing UE5.0 again from scratch. It's helped me and a few others. Good luck!

[@stockbridgeworks]

Hmmm, I updated all the way. Will do as you suggested.

[@WilliamFaucher]

@@stockbridgeworks If you don’t have any issues you don’t need to!

[@MostafaAhmed-bp7ce]

I have indeed experienced *alot of crashes* which was really strange considering it was working fine with preview 1 & 2, imma definitely try that thanks

[@stockbridgeworks]

@@WilliamFaucher I have had crashes tbf, so just eliminating potential issues 🤗

[@battosaijenkins946]

@William Faucher, Thanks for the video. I really want to enjoy UE5, as I installed it from scratch on a monster system (12900k + rtx 3090 FE) but I'm crashing all the time. And I'm coming from OpenGL C++ developer who never had problems before. I guess they're still ironing out the kinks but it's difficult to get into it when you're learning the ropes and either A) Takes forever to compile all the shaders and/or B) It crashes or freezes for no reason on a migration or even a simple save! Ugh...

[@RobinDale50]

This guy is an absolute master when it comes to lighting in UE (among many other advanced skills).

[@WilliamFaucher]

You're way too kind :)

[@RobinDale50]

@@WilliamFaucher And you are way too skilled and talented to be giving all this for free! (But I will take it! Has helped me tremendously)

[@acsomiT]

​@@RobinDale50 The generosity of sharing, not necessary for a monetary purpose, never made a knowledgeable man poor, contrary. I know a couple of very successful people who are one of the most generous people I ever met when it comes to sharing knowledge for the joy of it! ☝

[@OverlandBound]

Thanks!

[@OverlandBound]

Best method with opacity maps?

[@WilliamFaucher]

Goodness thank you so much for your generosity!

[@WilliamFaucher]

Depends on what you need them for? Masked is best for a simple opacity map, not translucent mode :)

[@OverlandBound]

@@WilliamFaucher thanks for the reply. with early access I was trying to do dirty windows in a car with tinted glass. I couldn’t ever get it to work quite right. I was using the opacity map for muddy areas.

[@OverlandBound]

@@WilliamFaucher your videos are really good. Have helped me a lot.

[@stefevr]

Also a useful tip: Unreal 5 has a "favourite" section, for instance if you use "exposure" a lot on a post process volume, right click the exposure section and you will see "add to favourites", the exposure section is now always at the top, super useful to not scroll down anymore for the sections you like, plus once you do that it's applied to all the future actors you will place later in any scene, in this case all the future post process volumes you place will have exposure in the favourites. hope this helps!

[@victorblanchard7774]

Nice one!

[@stefevr]

@@victorblanchard7774 Cheers! Happy it can help people

[@liverenders]

Wow thanks!

[@TFMHCR2]

🤯

[@stefevr]

@@TFMHCR2 i know right

[@pwnisher]

You're just the best William.

[@WilliamFaucher]

Oh stop it, you!

[@andreasmoyseos5980]

Thank you William, keep up the great work!

[@WilliamFaucher]

Thank you so much!

[@bobtruck1594]

Good job bro. Recently switch to full time ue5 in production. Will give vray, corona and the other gangs a break and try to master this game engine. So much potential!

[@mata6273]

By far the most helpful tutorial have seen. I have tried many other turorials and forums (including Reddit) and this is the only one that allowed me to display translucency in my viewport.

[@BatnobieX]

I spoke on a pannel at magfest 2022! and recommended people to view your channel as it has helped me learn a fair few things. Thank you for all the content you do!

[@egretfx]

so helpful, I really appreciate having you in the industry!!💙

[@cipriansocaci923]

William, your tutorials are a lifesaver! So much useful, clear information at every step of the way. Your channel is my go-to whenever I'm stuck in Unreal Engine. Thanks for the amazing guidance!

[@Billy-sj4vr]

Thank you so much as always for your incredible teaching style. It's so easy to understand the concepts that you're talking about. I've already learned so much from you in the past year!

[@DominikMorse]

William, the best Unreal Guide.

[@WilliamFaucher]

Thank you!

[@TirickCFire]

I know this is an older video but you solved a nagging issue I was having with translucent cloth artefacts. Ray Traced translucency in the Post Process volume cleared that right up. Thank you!

[@Flipside3D]

I was struggling with reflections and translucency in a render test couple of weeks ago, thank you for covering these points!

[@Monoville]

Great vid, very helpful! I think I mentioned this on one of your previous videos, but for anyone wanting proper ray traced translucency on car windows with realistic reflections, max refractions has to be set to 1 in the ray tracing translucency section

[@owenjenkinsofficial]

This helped sooo much! I did notice, all ray traced translucency shadows still work in the method standalone ray tracing, but not in lumen as you stated. Hope that they have a fix for this soon! Does look like Alberts comment I responded to has a partial fix!

[@essamibrahiem2896]

Hello William, I was waiting for this my man !!!, thank you so much. Just wanted to tell you that regarding the part where you said that we lost the shadows for translucent objects in UE5 although we had it in UE4, for me it worked as expected when i checked "Cast Ray Traced Shadows" in the Directional Light details panel. I wish you the best and please keep up the good work !!!

[@OverlandBound]

Perfect vid perfect timing

[@SomeKindOfMattias]

One thing I’ve noticed is that there seems to be something going on with volumetric fog in the release version. If you have a start distance you will see very sharp border where it starts

[@WilliamFaucher]

Just tested it and you're correct. I can't remember if that was also the case in 4.27? I so rarely use start distance at all.

[@SomeKindOfMattias]

@@WilliamFaucher I uninstalled 4.27 so can't double-check, but I'm like 90% sure it worked better in 4.27 and even preview 2. :) Find start distance can be useful to give your immediate vicinity some better sharpness in some cases

[@GordonSeal]

This isn't a problem of the volumetric fog but the exponential height fog in general, the start distance just cuts it off very sharply. It's usually better to avoid the start distance and play with the fogs density instead ... but in general the world fog in Unreal is in dire need of an overhaul.

[@dwayneserjeant3582]

Thanks for all the tips and hints, tutorials etc. Great job and much appreciated by us all (I'm sure!)

[@albert93911]

for glass to cast shadows, you'll need to set your Direct light - Light - Advanced - Cast Raytraced Shadows to ON. Otherwise an awesome video, thanks William.

[@owenjenkinsofficial]

Hey this is a good way to get the reflections, but I find that I begin to get normal & lighting artifacts all over my megascans materials once this is active! Is there a fix you know of, then I am down to listen and learn! If not I wonder if this is a conflict with nanite features and the ray tracing settings?

[@Alodecron]

@@owenjenkinsofficial Maybe it is fixed if you, on the light; turn on "Distance field shadows" and on the mesh; set "Generate mesh distance fields" to true?

[@elmoonezazan3144]

it Doesn't work for me

[@owenjenkinsofficial]

​@@Alodecron Looks like I already had distance field shadows turned on the directional light, but I dont see that checkmark option to generate mesh distance fields in the mesh settings. Affect distance field lighting is checked though on the mesh and in the engine rendering settings, then the Generate Mesh Distance Fields is also already checked.

[@sadanandbyahatti]

Turn on Raytraced Shadows in the Project Settings >> Rendering >> Hardware Raytracing to cast shadows from translucent objects.

[@MPRX87]

I probably sound like a broken record on your videos, but you're a serious MVP with your tutorials and tips! Keep up the amazing videos!

[@DIRECTEDbyRAY]

Thanks William for clarifying those settings. I noticed an issue with dof acting wacky, will take your advice to remove and do a fresh install!

[@AndreyShu]

I'm working in gamedev, so in realtime. It's crazy how your info for CGI is now applicable and helpful for gamedev

[@rickdrummond8317]

Thank you so much William. Your video also solved a ghosting issue that I had with window frames. The fix was changing PostProcessVolume/Translucency/Type to "Ray Tracing" instead of “Raster”. Thank you. Thank you . Thank you. ;)

[@AZmaybe9]

Man, wish Lumen had more options for ambient occlusion controls. Even using the Raytraced AO I need on top of it would fix my issues because it's completely missing on dynamic characters. Only thing it allows is material AO and that has been a nightmare to bake and setup. (No idea why AO becomes a metal hike material when baking a static mesh AO) Lumen + Raytraced AO on dynamic characters would be perfect!

[@NicolasSilvaVasault]

this totally goes on my fav on youtube, super useful stuff

[@AlessandroSchiassi]

You can put "Hit Lighting for Reflections" as Default if you go in Project Settings - Rendering - Lumen - Ray Lighting Mode and switch it there. This way that would be the default for every Post Process Volume you are adding to your scene.

[@whovisionsCGI]

Another invaluable guide. Being a newbie to UE5.1 I have so much to learn and I don't think I'll remember it all so thank goodness for these tuts to look back on. 👍

[@snook-official]

This video is gold, please don't ever remove it, it's helped me a couple of times solving different issues!

[@PTMTerror]

This is some master degree quality content right here Professor Faucher. Colleges would be jealous.

[@PiyushYankee]

I was frustrated with UE 5 and I knew I had to wait for your video to get through the obstacles, thank you so much for clarifying things.

[@vfxforge]

when is Epic going to put you on the payroll? the amount of great work you do for their users is above and beyond.

[@andreacelia4599]

YOU ARE THE BEST!!! Thank you so much Bro for all your awesome Tips and Tutorials!

[@NarcisoOliveiracg]

Congratulations for the amazing content and full of information. I'm a graphic designer and 3D artist. Without a doubt it was the clearest video I've seen to date talking about the subject of Reflection and Refraction within UE5. Thank you. I learned a lot!

[@WilliamFaucher]

Ah thank you so much! I will definitely be covering these topics more in depth once the kinks are ironed out in UE5's new systems :)

[@rohanmandke1920]

Awesome ! WIlliam, Thanks for the detailed explanation. A perfect video. Yes as you mentioned about glass, and shadows, its still a problem and not sure how to render all together when glass body is there in the scene.

[@WilliamFaucher]

Yeah it is not a perfect solution, gotta pick and choose what works best for you!

[@philipsloth6600]

You are heavily underrated William, thank you for this video.

[@StormX312]

This video was useful to me as someone relatively new to UE and Lighting. Thanks!

[@WilliamFaucher]

Cheers! Thanks for watching!

[@alexanderkartashov8776]

As always, you're the best ^^ Haven't got any issues with UE5 yet and with this video i'm prepared for some of them now haha XD Oh i had a little confusion when i haven't found displacement on my new landscape, but it's not a big deal for now.

[@wafflesoft]

What a great tutorial. I love the way you explain look here as I change this. I wish I wasn't having soo many issues with ue5 this would be super useful. Using a 1080 card. Moving my project from ue4 to ue5. I got huge FPS drop even after disabling the new features like vsm and lumen.

[@WilliamFaucher]

Cheers! Yeah the 1080 is started to feel a bit dated at this point, especially if you're using raytracing, it really isn't made for that!

[@OlavSchneider]

Subbed, great video so much details, this would have taken me hours if not weeks to figure out by trying my self. Great thanks!

[@WilliamFaucher]

Thanks so much! Welcome to the community!

William you are the best one channel unreal engine on youtube I will join to support you man big thanks

[@Radwalls]

Having to come back to this video even in slow motion speed. Great video to learn on!

[@mattd2129]

these videos are the absolute best. thanks Mr.F.

[@oxygencube]

Excellent job once again! 👍👍👍

[@MrHannessie]

Hey, This is such a great tutorial! I learned so much, Thank you!

[@Catthyp]

Priceless Thank you

[@luisfgp80]

Just the reflections tips saved me hours, thanks a lot WF

[@aung4506]

"Real-time glass" is the new technology that we all need.

[@heaven81100]

Exactly what i want. Great Work.

[@PixelsLaboratory]

14:15 not only did we lose shadows for glass, but if you have some decals and/or emissive materials in your environment, as soon as you view them through the glass, their effects just go away, like the decal is missing completely and the emissive material (like a bright neon light for example) is simply shut off and unlit. That really bugs me... I keep playing with settings but no matter what I do, I get something back only to lose something else... And don't get me started about true "two-sided" glass materials...

[@dreamaera]

Super informative for beginners, subscribed :)

[@WilliamFaucher]

Thank you! Welcome to the community!

[@jonbonjovi38]

wow, thanks for the help . that's a huge help !! you're good !!

[@sams_3d_stuff]

Long time follower William. Let's go for the 100k sub. I pray It'll come fastt so more People can enjoy your great teaching blessing

[@robg5769]

William strikes again! the best in the tube!! thank you :)

[@kritikusi-666]

super informative. Thank you!

[@PeteDimitrov]

Informative and to the point. Thank you!

[@virtucci]

Thank you! Very helpful!!

[@unrealengineruseng9583]

Very good tutorial! Thank you !

[@krzysztofbogdanowicz4543]

Great explanation - thank you very much !

[@chriswaters1480]

Hey William, super helpful as always, great tips thanks so much! Just wondering if you know anything about the Quixel Mixer to UE5 workflow, obviously can't export from the bridge application anymore and the in-built bridge doesnt seem to have a 'mixer' tab for custom materials. Cheers mate, keep doing what you do

[@stefevr]

Thanks for another great video! The nanite fallback needs to be set to 0 to have a better lumen to pathtracing transition, basically using the highest density mesh. For glass I wonder if volumetric shadows works like in UE4? I'll have to check

[@WilliamFaucher]

Yeah set it to 0 but just... be careful. That can easily blow out your vram usage. Nanite meshes are DENSE.

[@stefevr]

@@WilliamFaucher ahhh yeah of course! Im assuming its for pathtracing for linear content in that case even millions of triangles are still okay but megascans can get scary complex! Even without nanite though Unreal seems to do well with crazy meshes surprisingly

[@WilliamFaucher]

@@stefevr thing is even with the pathtracer you can crash when you run outta vram so use with caution! :)

[@stefevr]

@@WilliamFaucher wise words :D

[@MrDavilawe]

thanks so much like always!

[@JoshuaPuppe]

You, sir, are a magnificent human being.

[@Glowbox3D]

You rock William thanks!

[@cr4nkk623]

Great video as usual, thx!

[@andrewwells290]

Thank you so much, it was really helpful!

[@liverenders]

Do you ever do live streams?

[@ffabiang]

Thank you so much for this video, it was very helpful

[@paymansalehishafa6884]

One thing I've noticed is that with the glass material, the reflection of reflection comes out as black. The chrome material you showed doesn't use translucency thus we can fix the black reflection of reflections. The only true solution I was able to find was to just use Path Tracing.

[@solvilla-ln1rb]

Good Work thanks SIr

[@Winged4Ever]

11:17 - In order to save some GPU cycles you can place a Sphere Reflection Capture and execute `r.RayTracing.Reflections.ReflectionCaptures 1` to replace black bounced reflections areas with baked reflection.

[@EddyKorgo]

Huh. So neither Lumen or Raytraycing is perfect. Been wanting to see the differences. Thanks for showing.

[@WilliamFaucher]

The only way to get things "perfect" is with the Pathtracer! But even that has a few limitations, like no decals, or things like that. But then again, I don't think many offline renderers have decals, that's pretty much a realtime renderer thing.

[@PIPOXO]

Quick tip for MAC users and Quixel bridge: In order to open bridge on UE5 on MAC you need to activate Web Browser and Web Authenticator Plug-In.

[@smudgybrown67]

Thank you, William =]

[@DesignsbyDonBrown]

4:33 Is that a 3D model, or is that landscape mesh shaped like that?

[@WilliamFaucher]

It's just a few cubes with a checker texture :P

[@AlekMadeDis]

There is one method "fake it till you make it" but it require some shader wizardly. Basic shader with cubemap for reflection and refractions (more advance is to mask out hot spots in cubmap) and decal for caustics with emissive (if needed). Sure hacky-waky but its works.

[@Cr4y7-AegisInquisitor]

There is another ray tracing setting in the project settings that gives shadows to glass materials

[@unrealist5288]

Very helpful master. 🙂

[@culpritdesign]

I don't make games or do 3d work but I keep watching your videos for some reason.

[@unrealengine5-storm713]

I have had nothing but problems with UE5. Many of the bugs from non release versions are still present....and a bug that was in 4.27 is back in 5.0.0 release that I havent seen in the non production ready builds. Not to mention chaos physics is literally half as performant than their standard physics solution in ue4. UE5 is a beast, but certainly has its issues

[@unrealengine5-storm713]

@A-fxs nanite does not support masked/wpo/translucent materials. Only opaque static meshes.

[@lz4090]

If Epic has not hired you yet, then I do not know what they are doing. It would be great if you would be helping polish/QC UE5's features that are related to Cinematography, Lighting, etc. Thank you for the informative videos. Hoping most of the problems will be fixed in future updates.

[@MustafaBerkeGureltol]

I have a few questions: 1- Is there a way to get the most physically correct raytraced lighting within UE5? Is it the path tracer? 2- If so, is the path tracer better than Lumen and hardware raytracing if we don't care about the performance? I read some articles online about path tracer being a more accurate solution. 3- When we enable the path tracer, do the chrome balls look good and integrated into the scene when they reflect each other back and forth?

[@WilliamFaucher]

1. Yes, pathtracer! 2. Yes absolutely better. Slower, but better! 3. Yup! Pathtracer is fully raytraced, gives best results!

[@MustafaBerkeGureltol]

@@WilliamFaucher thank you so much! You cleared up a lot of confusion for me.

[@amilcarmarta8316]

Good morning, your videos are spectacular, I always watch when one comes out, with a lot of content, and well explained. I have a doubt the GTX1060 6g graphics card, does it work with this tip?

[@hdkdesigner]

In the Early Access build of UE5, the value for maximum quality for Lumen Reflections was actually 4, even though the slider only went to 2. Not sure if that is still the case, but setting the value to 4 might improve the quality even more.

[@WilliamFaucher]

I tried, it didn’t seem to have any difference. Seems like it has changed.

[@Byronx3000]

So many hours I wasted trying to solve the glass problem with the shadows and the caustics and now I know why it doesn't work. Thank you

[@WilliamFaucher]

Apparently there is a project settings for shadows on translucent materials now! Caustics won't work though unless you use pathtracing.

[@Byronx3000]

@@WilliamFaucher I'm not very familiar with ue5 and I'm learning a lot from your videos. Thank you for answering and I hope you can give a better explanation in the future once this is solved because I'm a little lost

[@lucasfilip4479]

Great tips, thanks a lot! BTW, I noticed the glass is not affected by height fog, is there a workaround?

[@angellomarques]

Thanx Will!

[@Artof3drendering]

Is really annoying the fact of the raytraced translucency don’t get shadows!! I already tried everything and don’t find any working solution!

[@marshallnooby]

Thanks William. I've been following your channel and have been learning a lot. I really appreciate that. But it would be really good job if you make a detailed tutorial about displacements (or virtual textures) in UE5. I tried to figure out it but I'm stuck working with displacements or should I import only hi poly geos? I have no idea what is the right way of working with nanite. Thanks man, you're awesome and your channel is brilliant 👍

[@WilliamFaucher]

Hi! Thanks so much! Basically displacement isn't really a thing in UE5. Nanite works best with importing high rez models for the time being. I'm hoping displacement becomes a thing again soon.

[@outtoplay]

@@WilliamFaucher Seems like the launch release has taken what was fairly regular and reliable workflows for many folk and turned them on their ear. I can not remember a software release that seemed more like standing on one leg, while hopping, rubbing one's tummy while you pat your head and count backwards from 1000 in alternating languages of French, Latin and Gaelic. And the fact that light channels and stencil layers are gone just rub salt in the wounds. Perhaps 4.27 isn't as retro after all 😳

[@WilliamFaucher]

@@outtoplay I hear you! It’s not entirely surprising considering the rendering methods are completely new and actively being improved/worked on. X.0 releases are always pretty buggy and that’s kind of expected. Lighting channels never worked with Lumen even in Early Access, due to the way it works/is designed, but if you absolutely need them just disable lumen in the project settings to revert to whatever you had in 4.27 :) It’s a bummer they’re not supported but Lumens benefit still massively outweigh its cons !

[@stockbridgeworks]

Thanks for this my man! Can't wait for more tuts from your badass self 🤗 Can I ask your opinion on how a GTX 1650 performs with UE5 on a laptop? Compared to my older 2x GTX 1070ti's.

[@matiasyepez6638]

Great video!!! Although I still have a problem with lumen. The GI is very noisy and with the reflections there are a very weird black moving patches. It is not as clear as yours. Could you make a video about it?

[@ZalvaTionZ]

Have you tried turnining the quality of lumen final gather up with cvars? Haven't tried a complex scene yet, but with blank materials where it mostly is visible just upping the quality makes diffuse GI look pretty clean. Specular GI reflections are still pretty noisy no matter the settings, but that's only visible with clear materials.

[@poyodiazmusic]

I have black spots problems in path tracing mode when i use some mega scan assets , if i hide them from the scene everything comes back to nomal , maybe check if you have some mega scans materials?

[@aknittel1]

William, I've reviewed some of your videos like this one and have concluded that there seems to be a tug-of-war between ray-traced features and the new Lumen and Virtual Shadow features. I'm a filmmaker, not a game developer. I plan to use UE 5 SOLELY to produce photo-realistic environments. I'm only going to run UE on a very high-end rig of my own (top-of-the-line Intel 128GB RAM /NVidia RTX 3090) and render out footage to composite CG models against. I don't care about running on someone else's low end rig. For people like me using UE for filmmaking, I just want to tweak project/post-process settings so UE does the right photo-realistic render in ALL situations, regardless of performance which for MY rig and purpose it wouldn't matter. Can you provide a list of settings that would produce expected behavior regardless of a decrease in performance?

[@AlekMadeDis]

I noticed they added few new color space profiles in UE5. Are you going review them in future ?

[@WilliamFaucher]

I will! But for the time being, it's only something you should ever touch if you know EXACTLY what you're doing, or if your production needs it. Otherwise, no touchy.

[@AlekMadeDis]

@@WilliamFaucher haha yeah ! pinky promise only look no touchy

[@poyodiazmusic]

07:35 I don´t have this option in my unreal 5 , also i don´t have the option to enable path tracing in the preferences.

[@WilliamFaucher]

Is it possible you’re using an older version of UE5?

[@poyodiazmusic]

@@WilliamFaucher thabks for asking , it reads 5.0.0 early acces2 , i downloaded it yesterday

[@WilliamFaucher]

@@poyodiazmusic Ahhhh, yeah. You’ll want to upgrade. Preview build is old ;)

[@poyodiazmusic]

@@WilliamFaucher thanks again!

[@arjungowda6452]

Thank y ❤️ u

[@WilliamFaucher]

Thanks for watching :)

[@ArchCaster]

Brilliant!

[@cg.man_aka_kevin]

Can the lighting settings be supported only by the CPU?

[@WilliamFaucher]

No, Unreal is technically a GPU-renderer. If you want CPU-only, you'll have to use Blender or Arnold.

[@cg.man_aka_kevin]

@@WilliamFaucher Oh, Wow, good thing I have a GPU... lol. Radeon... If the Ram of GPU is 4, it's is ok?

[@WilliamFaucher]

@@cg.man_aka_kevin 4 is extremely low, I think the recommended for UE5 is 12 😂

[@cg.man_aka_kevin]

@@WilliamFaucher Ok... I think I have to wait my money is enough to buy it... Because now GPU it's expensive, can you tell me what the best GPU and cheap but fast?

[@yanhu]

Very useful video. I wonder why Epic no one talks about it.