Unfortunately due to a bug in OpenVR:
https://github.com/ValveSoftware/openvr/issues/391
http://steamcommunity.com/app/358720/discussions/0/133256240733525666/
WiseMind may freeze during Tai Chi exercise due to too many haptic calls, we are working very hard to workaround this issue. Our apology if it causes any inconvenience.
