So, I MIGHT have fixed the issue? I'm not 100% sure because I'm still kind of testing it by idling and doing content as long as I can. But last night I was able to run the game from 5:51pm EST until 6am EST with zero crashes or errors.

I had previously updated to a latest BiOS update for my motherboard, I have an X570 AsRock Taichi, and that was when I got the errors on the game but I didn't realize it at the time and didn't think about the update being the issue. Well, yesterday, I decided as my final resort before being at the mercy of the pagan gods that I would rollback one update and see how it went. So far it's going extremely well.

Best bet is see when the last time they updated their bios and just try the current update or the second to last update and see if that fixes their issue. I haven't tried reinstalling the game because I am TERRIFIED of something breaking so I'm just rolling with it right now and hoping for the best. I hope this works for your friend and they can play without crashing!