Not much of a guru, but some potentially useful advice.
Wipe your darktide roaming folder in windows and have it re-detect your hardware on launch.
Spent almost 6 months troubleshooting why darktide looked significantly worse than it “should” after swapping from nvidia to amd (2080ti to 7900xtx) and darktide turned into a real headache for a while.
In my case it turned out the reason it looked like there was no AA and fsr/xess was just not doing much more than washing out colors and textures was that for some reason, the cfg file for darktide would just never update no matter what, and due to that conflict and my old hardware still being registered as active it would not let me set AA ingame amongst other things.
This was before using mods or any other tweaking too, but wiping the roaming folder actually fixed my issues.
Could set AA properly in native, the different frame “gen” techs were actually selectable properly when wanting to test RT, game has been rock solid since then and looks the way it should have to begin with.
I didn’t see it mentioned so i’ll also say if you haven’t run DDU yet to clean out old nvidia stuff you really should, just to avoid potential headhaces in other games as well.
(this bit applies to any major hardware manufacturer change in any direction to be fair).
Personally i keep all but image sharpening and enhanced synch off these days in adrenaline as the rest aren’t really much point in native with a 100hz ultrawide that i run it on, and unless you have a monitor that can actually manage frames in the 200-300 range it’s a massive waste of processing power (certainly with a 9070xt at anything over 1080p) and image quality.
With my own monitor limit i just set the fps max to 120 and let the card just chug along without getting hot instead of trying to push 50 frames that do about nothing even with everything maxed at 3440x (outside of RT obviously)
Upscaling in general is kind of a waste imo, though you could argue the RT in darktide does look good enough to bother at least dabbling in xess or fsr3+ at times.
Again, this may or may not apply to your situation, but possibly worth looking into.
As for a how-to, a link from the help forums here;