The system freezes and then dies

[voodoo]

I bought F2-423 a long time ago and it was lying around for a long time, and now I updated it to TOS 6 and decided to use it.
About an hour after launch, installed applications start to die, then the gui disappears (including through the program for Windows, only monitoring remains visible), then it can finally crash. Where to look and maybe someone has encountered this? So far, the ssd from the steam deck is installed as a system ssd (what was lying around idle).
If the gui does become available, then everything freezes terribly and when trying to launch applications, either nothing happens, or everything is written again.

[voodoo]

As a result, when everything dies completely, I get: 502 Bad Gateway nginx/1.21.0

[Gremlin]

I'll toss in my 2cents and point to the ssd.