Windows Mixed Reality losing position tracking around people

Hi guy, I need help.

I created a win MR app, works fine if only 1 or 2 people around me, if more than 3 people, the headset lost high position, and drop to the floor position, the controllers stop working too, restart app not help, have to restart the computer to get it to work again.

Is this happen to other people? Is there a way to fix it? it looks bad while people want to try it.

 

thanks,
looks like I need setup some reference points, since too many moving targets (people) blocking major parts of the environmental features of the room.

 

ive found you really need distinctive walls for WMR to have good tracking...4 white generic walls will cause problems for sure.