Crystal Light loosing tracking after FW 1.0.22 update

Since the new firmware update, my PCL keeps loosing tracking mid game.

If I quit back to SteamVR it’s the same.

Same in Pimax Play.

Only a restart of the headset will solve it.

But it just happens again after a few minutes.

This happened before and I thought I’d solved it by lowering the brightness of my room, but it seems not.

Doesn’t matter what game it is.

Any ideas?