Procedural mesh collision strange behavior

Hello,

I’m trying to re-generate landscape as procedural mesh.
Everything looks normal but collision behaving is really weird. I can move normally but If I reach any slope then I’m falling trough or if I’m moving while I’m in the air.
Linetracing is working also normally but It’s not colliding.

In the video you can see collisions (command used: “pxvis collision”) that’s looking fine.
(ProceduralMesh Bug - YouTube)

I don’t really know how to solve this, I appreciate any answer!

Thank you