Well, I have described the situation and solution to Greg already on Discord. I guess if more users ask for it he will do it.
FYI, I do the following to fix it:
1. calibrate button to fix angle between HMD and kinect v1
2. recenter standing space in steam setting quick calibrate then fix floor
3. when it drifts, i go into Controller Shift/Offset and press up/down in HMD, Adv. Offsets, Driver absolute offset.
4.repeat step 3 mid game when it drift too much.
If he put it in Virtual move and rotation menu, we can do it without using arrow in the menu and on the fly. It might conflict with game commands but drift is worst…