So RX6900XT can run normally on win 7? that's weard cause i was download the driver from the AMD's website, for the latest driver 21.5.2 for win7 , but i got this low fps issue, and when i try to use the way you did try to update my drivers it says i must update it with amd installer , do you know how to fix the low fps problem? My build -> CPU:1920X GPU RX6900XT master mem hyperX 16G harddrive seagate 2TB HDD power ROG THOR 850W.
I did the exactly ,run DDU first then download the latest driver from AMD(21.5.2)WHQL, then low FPS on game, my old GPU is RX580 8G, is that the reason ??can old driver effect on new GPU after i run DDU ?
my god what are you doing, run DDU, download the drivers in the OP, install them with Device Manager and off you go.