Since you replace the mobo its like you said, psu or cpu. Unfortunately these random crashes are the worst to troubleshoot, especially without spare parts.
I'd take out MB out of case test on table, to know if is case issue ...bent case seen this beforeIt started doing it again
I did replace the motherboard with an Asus B550-plus wifi (wifi is much better on this than on the gigabyte)
Put the stock cooler in to make sure i didn't mess up the water cooler, same thing.
Both sides of case off and blew a fan in, same thing. Thought might have been heat as fps start around 150 and then steadily drop as the game progresses and goes as low as 45fps at times even with not much going on, then back up to 80/90.
I'm going to see if I can borrow a couple of sticks of ram and test
Don't think it is bent pins on cpu, I inspected it on purchase and it slid into the socket easily
I hope it's something as simple as the ram
Ok, this is some odd stuff.
BF5 and World of Tanks, I can play for hours without issue.
But, get this. I mapped one of the buttons on my Logitech G900 (wireless) to be F4 (mark enemy aircraft). The last 5 times Warplanes has crashed to desktop was right as I pushed the button on the mouse. It doesn't crash every time I push it, so, I tested. I went into battle and just spammed that button and sure enough it crashed. WTF?