Hmm well if the reported speeds are 167Mhz for the video memory clock speeds then it's obviously not stressing the GPU enough for it to hit the higher clock states. I wonder if the GPU core clocks and setting P2 as the minimum here would help although the only way I can see it crashing is if the GPU hits a point somewhere during the game where it boosts but the voltage is too low and thus it crashes or it somehow falls below the min voltage which I think is 0.850mv for the GPU core and that can be unstable but that seems less likely that it could drop below the minimum value. Could also be a game bug or driver issue although I am curious how low of a load that tile is even putting on the GPU for it to remain on the idle speeds for memory which should be on p2 or the 500mhz speed and not p1 but I guess the game just doesn't generate enough workload for the GPU to be stressed at all thus it maintains the idle speeds. And overriding that HBM minimum clock state didn't help and voltage should be a single static value. There's also the reported memory voltage value in Wattman mostly working as the voltage floor value but the default here is already 0.950mv I believe so that is already above the 0.850mv which is the minimum value the GPU core can handle. Raising it to 1.0v might help keep overall voltage to a level which is stable even if the GPU activity fluctuates a bit resulting in a higher clock speed briefly and possibly stability from running at a lower voltage as that happens but that's assuming it's a voltage issue at all in the first place which if forcing a higher minimum memory and gpu power state isn't working then it might not be related to power at all. Which would also remove the 167mhz issue then since if overriding it to where the memory speed minimum value is 500mhz instead then it won't ever drop to 167mhz and the idle speed for Vega 64 for the HBM2 modules. But then what would cause these stability issues. Adjusting the Wattman settings aren't going to be doing much for p1 to p5 either short of modifying these via a registry modification to force settings which are otherwise locked off since by default only the p6 and p7 states are available for the GPU clock and the p3 state for memory. EDIT: And if it's a driver bug then with the popularity of the game itself AMD would have to respond to issues with stability. Just more questions and not really any answers I suppose, I'm leaning towards clock fluctuation and it hitting a higher speed but while not having upped the voltage thus stability problems but that could be incorrect. EDIT: Or a driver issue because even if the game is lightweight in terms of GPU demand it should still generate something and that would move the power state into a higher non-idle level which it doesn't seem like it's doing that at all.