Maybe run DDU and remove all things AMD .. reboot .. and THEN install latest Radeon drivers
..also, be sure to update your motherboards BIOS to latest and install latest Chipset drivers from AMD.com or Intel.com ..whatever you are running
..also, be sure to run separate power cables to each power input on your shiny new 6700XT (this has no bearing on software, but will net you a few frames per second and more stable operation)