When creating LODs for Unity 3D assets, common mistakes include inconsistent topology between levels, over-simplifying key details, and ignoring texture optimization.
Inconsistent topology (e.g., mismatched edge loops or UVs) causes visual glitches during LOD switches. Over-simplifying critical features (like a character’s face or product logo) makes lower LODs look unnatural. Ignoring texture mipmaps or using high-res textures on low LODs wastes performance unnecessarily.
For beginners, use Unity’s built-in LOD Group component to preview level transitions and test with the Profiler to catch issues early.