Well, this is weird. Today I wanted to play some more Horizon Forbidden West and after the pushing the card to its limits yesterday I am suddently getting intense artifacting and crashes all the way down to 2550 MHz memory clock. Whereas I played at 2664 MHz for almost 5 hours a few days ago...
Hynix RAM.
Also, currently the fastest 7900 GRE on the Timespy Extreme leaderboards. Keep in mind I'm on a X370 board so the card runs at PCIe 3.0 speeds. Not sure if that has any noticeable effect in Timespy tho.
I think I might have won the silicon lottery this time...