I don’t import custom LODs for my meshes, I just use the Mesh Editor settings and when selecting any other LOD than 0 it defaults the triangles to a minimum.
Example in screenshot for LOD 1, it should only keep 50% of the triangles, which should be around 14k but is stuck at 64…lol
Also it doesn’t preview the LODs made with the Mesh Editor which is very annoying…
