Thank you devs and amdmatt, driver 20.5.1 cured 90% of the graphic corruption issues with Links 2003 and the NAVI cards as followed in this now closed thread: [Bug] Graphic corruption Links 2003 w/ R5600XT & 20.2.2 Driver
I no longer had my 5600XT card to confirm myself, having returned it; so I bought a new one based on you and mickyfish saying it was fixed and just tried it today (XFX Thic III Pro)
Unfortunately with Anti-alias on (see settings pic) I get a white 'spike' shooting out from the golfers leg (with its own shadow?!).
Additionally, anisotropic filtering is not taking, the game does not recognize the setting is set where it does on other non-NAVI cards. This is vitally important in Links2k3 and readily apparent in the high quality texture courses, see pic below circled for the foreground 'smudge' and really detracts. This is the most important failing to fix.
Use Mike Jones' Pilgrim Trails for testing reference:
If it's any hint, the morphological anti-aliasing setting does nothing either.
We're very close to getting this back to functioning like the non-NAVI cards. These settings work with an RX590 and a R390 and driver 20.5.1. Please help!
Here is a picture of Links2K3 on the same hole and course working properly with 20.5.1 on older cards, the R390 and the RX590. Note the difference in the greater detail of the grass in front of the tee box provided by working anisotropic filtering vs. the circled area above.