The project is a few GB due to the landscape size (2kx2k). Not sure if that has anything to do with it. However, I did download the demo project from github and ran map 8 (RunebergVRPlugin/Content/Maps at 4.20 · 1runeberg/RunebergVRPlugin · GitHub) and out of the box using HTC controllers I just walk through the hills, so that’s not working at all.
Here’s a video which demonstrates the issue. The “floating” and “slow fall” occurs at around 0:39. 2019 02 14 22 27 28 - YouTube