I finally got it working more or less. I had to redo the pairing of the Nolo components. It works now in ceiling mode. It's still not good overall, I have to recalibrate the controllers often just like before. There are still blind spots where the tracking fails. Head and controller position jitter sometimes, aiming is unprecise. So it is really not good at all, but the remaining problems seem to be on Nolo's side now, not Pimax and maybe cannot be solved as tracking with only one base station simply cannot be good.