I have a vehicle that is able to move normally within its nav mesh without landscape material applied. However, when I apply some Landscape materials (from the marketplace), the vehicle looks jittery as it moves abnormally slowly and then finally pushes forward when it stops moving (looks like its being effected my some form of impulse after the wheels stop)
As an experiment I put the same vehicle in the same landscape and just hardcoded it to move forward and it seems to move normally again which leads me to think it has something to do with the landscape material and nav mesh.
Any ideas? Using UE 4.24.3