I'm getting the same issues, with an ellipoid player hull colliding with a polygon structure such as a building, it's as though the player is getting stuck and it's position being changed to fix the issue, and it jerks. It's even worse when 2 ellipoid hulls collide, jerks like crazy, I've tried all suggestions in this thread and it's not working. I may have to upload a demo to show the issue. Can anyone help???