Question Random Freezing and Crashing Please HELP

[ItzTwaaa]

Hello gamers,
Currently trying to figure out this bottomless issue and I can’t seem to figure it out for the life of me
So on every single game I play it seems to work for 30 mins to a hour but anytime I get into any kind of fight or where lots of things are going on my game freezes up and crashes I have also gotten bsods all related to drivers and or memory
And it all only started happening after I replaced my psu and gpu
I have tried many things like changing the drive where the game is located I have tried lowering the settings and lowering the temperatures on the gpu I ran memory tests and all came back okay I went as far as putting another gpu in my pc and the issue goes away so any idea what the issue could be? I even tested both drives for faults and nothing at all
I am stumped
Update:
The specs are
I5 9400
32 GB DDR4 ram
TC-885 motherboard
GTX 1080 aero oc
750 watt Corsair 80 plus silver psu
I have tried reinstalling windows and also have tried installing newer updates from nvidia