hard to tell.
the reason why I first suspected the PSU, is because I just recently read about a similar case on a german forum board,
regarding the A770 in specific.
However, I've gone through your previous posts again,
and I now believe it might also just be the game itself,
based on steam user critics:
https://store.steampowered.com/app/1962663/Call_of_Duty_Warzone_20/
one thing that gets mentioned a lot is that it's pretty unstable & crashes alot (in general, on other GPU / systems, too)
so with your old gtx 970, did you play the same games a lot too, and were there also crashes or not ?
In more detail, why it could be the PSU : even though it's specified rating should be sufficient, it's already a bit old, is atx 2.3 and has only 1 single 12V rail. it won't run as efficient anymore after years of usage, or can't provide enough power anymore if it's very close to it's maximum.
newer cards often have completely different demands regarding short power spikes, even though you sometimes see similar TDP ratings/PSU recommendations regarding simple 'watt' mentioned for them.
if it was the PSU, maybe you could find out by disconnecting every non-essential peripherals / drives temporarily,
then switching to lower resolutions / settings ingame, and limiting fps significantly lower then you would be able to reach normally. (eg via vsync, or fps limiters ingame..
that way the GPU would consume less power, and 'maybe' also has lower / lesser maximum power spikes ?
afaik unfortunately arc control panel / intel command center only offers various vsync on/off settings but no custom fps limiter. it has a tuning option (beta) integrated, that would allow you to lower TDP however, never tried it and don't know if it's working)
in case of a faulty PSU, it's more common however to get a BSOD / display driver reset (if it's succesful, without restart/hard reset), rather than 'just' a directx error..
btw, regarding world of wacraft which you say runs okay:
I don't play that game personally, but read that it supports both DX11 & DX12 .. which API / render path are you running it on? will it also crash / not crash when using DX12 (which the other 2 games are based on it seems ?
not sure if the ssu.txt includes infos from Windows Event viewer, but you could definitely give it a try and search for more clues inside there.
(remember the exact time when the app crashes / when you receive the error, and look for critical / error entries shortly before and after that time)
