Having a couple of issues with my Zotac card. I think I've resolved one which was a cold boot issue, where the fans would spin up but the system wouldn't post without turning the PSU off for 10+ seconds before booting up again. It used to happen on occasion with my 6800XT so I reset the BIOS and only enabled XMP and ReBAR which seems to have done the trick.
The other is odd performance in Darktide and Helldivers. The latter was a stuttery mess on occasion with my last cards but that could be resolved by a restart, however now despite a good frame rate in both games they just aren't smooth at all, with a juddering that makes them feel like they're running a lot slower than they are. The GPU usage is fairly low (60-80% in DT IIRC) which indicates a CPU bottleneck, but with the framerate (always over 100) it should feel smoother than it does, and I didn't have this with the 6800XT.
For comparison I loaded up Insurgency Sandstorm and locked it to 120FPS and it was as expected, then did the same in DT and it feels far worse. FG is off. It may be that I need to do a reformat which I hoped to avoid, but other games run fine (GOW Ragnarok, Halo Infinite, all VR games). Also lowering settings to the lowest didn't really help much.
I'll try clearing my shader cache again tonight, but any other suggestions would be appreciated.