We found a lack of performance when the window of Natural Locomotion app is active (foreground) on the desktop. So we have added a feature to auto minimize the window since the most common scenario to use Natural Locomotion is from the SteamVR Overlay.
This feature can be disabled from common settings.
Anyway this not the perfect solution, so we will continue investigating and try to fully fix it in future updates.
We also have fixed a few minor bugs which could be related with the crashes reported by some users.
If you experienced a crash or any other issue, be free to ask or report it in the forum. If you experienced a crash before and this update has fixed it, please let us also know.
Thank you very much.