A couple things that can cause this…
- If your
r.streaming.poolsizeis set too low. If you’re using 8k textures you’ll probably run out of memory quick without increasing that. - If textures got imported as Virtual Textures (they will say VT), while your master material is setup for non-virtual. There will also be an error in the material. You can open them and uncheck streaming virtual texture.
- If it’s the mesh showing as low poly, then DX12 is probably not enabled, which is required for Nanite, so it’s showing proxy meshes instead.