VR testing - New Spa Scan in iRacing

Testing recording settings in VR, not running full res on my Pimax Crystal Light. Interestingly my 4070ti is not the bottleneck, my 7800X3D CPU is lol. I have about 60% of GPU headroom, but CPU just randomly drops to 0, sometimes its at 40+% headroom. Haven't tried an online lobby yet.