For the past week or so, it has been near impossible to play the following Steam games: Stalker 2 (UE5), Misery (UE5), Satisfactory (UE5), House Flipper (Unity!). At some point within 20 minutes of playing, opening a menu, map, inventory, or pause screen, etc. will freeze and crash the game. There is no bug report afterword, just a crash to desktop. I have many hours in all of those games, and never had a problem like this before. I play satisfactory and/or stalker daily. I thought it was a UE5 thing but maybe it is a DX12 thing? 2D games work fine. I have tried various proton versions through steam to no avail.
Operating System: Bazzite 43 Desktop
KDE Plasma Version: 6.5.3
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.17.7-ba19.fc43.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5700X3D 8-Core Processor
Memory: 32 GiB of RAM (31.2 GiB usable)
Graphics Processor: AMD Radeon RX 7800 XT
More info: MemTest86 is the standard. Put that on a flash drive, boot into it, and run it overnight. It needs to complete a full pass, which takes 4+ hours. A single failure or two is OK, any more is not.
If we are testing hardware, I would also suggest a CPU test with Prime95 an a GPU test with Furmark. Both of these tests are faster than the memory test, and you can always do them from a live linux environment if you want to remove your current installed OS as a factor.
Prime95 using the memory testing option might be sufficient to test RAM stability, too. When I was doing manual RAM overclocking, 30min was enough for a safe pass, but my errors typically appeared within 15min or less.
In case you’re dual booting - Windows also has a memory diagnostic tool. This did identify my RAM as broken almost immediately, while Memtest reported everything OK after a full scan of several hours. As I only knew Memtest back then it took me weeks to find why my PC was constantly randomly crashing, until I learned of that.
But that was about 2 years ago, so maybe Memtest did improve since then? (Or maybe I had some very weird behaving RAM and finding it with other tools was just pure luck…)