Hey thanks for that; still having issues though; played a few things tonight and the FPS I'm getting is way, way down on what I'd expect; looking at reviews/benchmarks online it seems reasonable that I should be getting FPS of 100+ in 1440P and 4K even with mostly Ultra settings; I'm barely getting over 70.
Even F1 2020 which should be running with ease in 4K or 1440P I'm well down on expectations; literally the only component that has changed is the GPU (I had my the 6800XT Liquid Cooled Asus I used for a friends build; it didn't really suit my case anyway) I could understand a difference if the temps were higher, etc but the TUF is a cool card and I'm seeing no temp spikes on the GPU (or CPU) that would be causing this dire performance.
I think I'll need to raise a return and buy something else.
You could try going into the radeon software and enable chill, set the fps to say 100 min and 120 max to begin with. Disable freesync and vertical refresh. If that gives you good fps then play around with the settings one by one, eg switch freesync back to AMD optimized first. You can do this both at global game settings, and selecting the individual games via gaming option at the top