The device can be reliable but you have to do a few things:
- In PiMGR, set the hemisphere tracking on.
- After power cycling the unit, the hemisphere gets locked the first time Vizard connects to the Polhemus device. When connecting for the first time since powe cycling, hold your sensor/s all in the +X Polhemus hemisphere (side opposite the cord).
- From that point on (at least until you power cycle again), you should have no more switching.