Garden Spider STRUGGLING to Build Web

This was a continuation of the video I posted a few days ago. As the night time fell (yes, this was after 5pm ironically), the air got cooler, and the spider got slower. This is very late in the year for them, and are probably over a year old now.
There were two of these black and yellow garden spiders (Argiope aurantia) spinning their webs at 5 p.m. on September 19th. Both are shown in the video. All of the other garden spiders in the area I'm doing this, except the two that are close to each other. I'm wondering if this could be a genetics thing.
It was 45 degrees Fahrenheit last night, and the colder it gets, the slower these are (see later videos). I'm thinking they are taking advantage of the warm part of the day now to rebuild their webs to endure the night, but I'm wondering also why these are the only two spiders in the entire hill of South Berwick, Maine to do this.
This is pretty late in the year for these, so they are actually struggling to survive. I have a feeling one of these two actually made 3 egg sacs, based in the look of the abdomen.
As always, thank you for watching! Sorry for the shakiness; it was an insanely awkward stance to hold.

[@aktualizator1219]

Coloration from yellow-brown to dark brown. The female is 10-18 mm long and the male 6-7 mm. Record large females can exceed 20 mm, and record large males can reach 8 mm.