#1 · Original PostApr 30, 2026, 7:19 AM
Investigating why a single 4K vehicle texture pack drops my FPS from 120 → 60 on a 4090.
Not a VRAM issue (16 GB used out of 24). Not stream memory (extender configured).
Profiled with NSight: looks like the bottleneck is mip generation on streaming. The pack ships pre-generated mips but the engine isn't using them - regenerating on load.
Fix in progress: rebuild the .ytd with explicit mip flags. Will report back.