Vehicle physics are resolving erratically and causing random jitter/flips in the Advanced Vehicle Template

When a vehicle is on an uneven surface, the physics that are handling where the wheels should be placed is resolving sporadically, causing noticeable jitters and sometimes flipping.

Regression?: Yes
This did not occur in 4.13.2-3172292+++UE4+Release-4.13
This does occur in 4.14.0-3195953+++UE4+Release-4.14

1. Create a project based off the Advanced Vehicle Template
2. Find a ramp like the one shown in the attached video
3. Drive along the ramp as shown
   Result: The vehicle doesn't react correctly to the surface that it is on
   Expected: The vehicle should react as shown in the 4.13 footage