Ground Textures not loading (VR)

Hi guys,
anyone knows a solution to ground textures not loading/ or loading very slow.

Especially in Vietnam and Afghanistan it is very annoying when the mountains look like 1997,
Tried high and medium texture quality, but no big change.

Im pretty sure the RX6800XT and SSD should have enough bandwith and VRam to load everything properly.

image

Specs:
Ryzen 5 5800X3D
AMD RX6800XT
32 GB Ram
1TB SSD
Quest 3 with Virtual Desktop.