As a 7900xtx user that has someone with a 7900xt working to help me test my changes can I recommend these 2 fixes.
1st one (the experimental portion you will have to try on vs off, as well as test with AMD SAM disabled / enabled as it seems to vary) - I fixed stutter and textures not loading in! (Texutre streaming config file change)
2nd one to enable full screen optimizations - Fullscreen Optimisations are not enabled for Darktide (fix included)
This has helped me a lot with performance.