techsupport

Hello everyone. I've currently been experiencing crashes when playing certain games. After a while, I realized that the only games where this happened were Unreal Engine games (Fortnite on Windows, Helldivers 2, Marvel Rivals and PayDay 3 on both Windows and Linux). Originally I believed that the problems were game related (the problems began when new Fortnite and Helldivers seasons began) but now that I noticed that Payday 3 crashes too I realized that all of these games are made in Unreal. These are my specs:

GPU: AMD RX 6600 XT CPU: AMD Ryzen 5 7600 RAM: 2x16 GB XPG (not sure about speed)

Some more info:

• Other games seem to work fine. I've mostly played God of War, GoW: Ragnarok, Doom Eternal and Street Fighter 6.
• The issue doesn't seem to be related to workload. Fortnite and Payday 3 will handle loading stuff and having may enemies on screen only to crash on calm moments.
• I ran Unigine Heaven 4.0 and it worked fine, I ran it in high and ultra settings and got around 200 fps. I let it run for a few minutes, nothing happened other than my PC sounding like a turbine.
• I have not messed around with overclocking or undervolting the GPU or CPU. The PC is second-hand (only 1 year of not intensive use) and the guy was not tech-savvy, so I don't expect him to have messed around with anything like that either.

I would really appreciate any help, thanks in advance.

Edit to add some info about the crashes: most of the time the game just crashes, it closes itself and that's it. Every now and then (not most of the time) the game takes my entire computer with it. My whole computer freezes with the last second of sound being played on repeat and then it shuts down and reboots. I could cope with this if it was just crashes but I'm afraid that this is causing actual damage to my GPU and PC in general.

Final edit: after running integrity tests and using OCCT I was able to figure out that one of my RAM sticks was faulty. After removing it I was able to play Fortnite for a couple of hours without errors.