This is a note from our game dev journey.
Have you ever spent time crafting a beautiful mesh in Blender—only for its topology to look completely wrong in Unreal Engine 5? I recently hit this exact snag: I made a nice, clean bent pipe section in Blender, but when I imported it to UE5, the geometry was all over the place. Vertices and edges didn’t line up, and the mesh wouldn’t match other sections.
What’s Going On?
It turns out that the issue was related to Nanite. By default, UE5 will enable Nanite for imported meshes. While Nanite is fantastic for high-poly assets, it can sometimes mess up the geometry of clean, regular models—especially pipes, modular pieces, or anything needing precision.
The Fix
You have two easy options:
- Turn Off Nanite for the Mesh
In the Static Mesh editor, just uncheck the Nanite option and re-save your mesh. This will stop Unreal from automatically optimizing (and possibly mangling) your geometry. - Keep Nanite, but Adjust the Fallback
If you still want to use Nanite, set the Fallback Target to 100% triangles. This ensures Unreal preserves the original triangle count for fallback LODs, keeping your mesh looking as it should.
TL;DR
If your imported Blender mesh looks weird in UE5:
- Either: Turn off Nanite
- Or: Set Nanite Fallback Target to 100% triangles
This quick change saved me a ton of headache and got my assets looking exactly as intended!
