Does Jolt.Plane2D only affect Motion , Not affect Collision & Contact ?

[finscn]

I search the keyworld Plane2D & mAllowedDOFs , I found they only work in the codes about Motion.

Does it mean "Check Collision" & "Solve (Contact) Constraints" are still in 3D ?
So the performace is not as good as box2D ?

[jrouwe]

Yes, collision detection is in 3D.

I haven't compared Box2D vs Jolt.