Seeing the exact same thing on my 6900 XT as well. It's a lot worse when inside a structure.
Only occurs with this game. Other Unity (and non-unity) games run perfectly fine. If it's a driver issue or Unity issue, then all other games have somehow managed to fix it.
Specs are:
i7-9700K
RX 6900XT (ASUS TUF)
64 GB DDR4 (3200 mHz)
2TB NVMe drive (XPG SX8200 Pro)
1440p 60Hz monitor