HWInfo isn’t listing GPU memory errors. Actually it’s AMD GPU monitoring is pretty sparse compared to the nvidia cards I’m more used to dealing with. Maybe just needs a Navi 23 update - tho I think it did update very recently.
I’ve settled on 2813mhz core and 2300mhz memory with the power slider maxed out. I’m running on a B450 so restricted by its PCI-E 3.0.
The 6600XT has error checking VRAM so when you get unstable it just drops the frame rate whilst it corrects the errors.
I agree too 