I have experienced all of the issues that @flash66 has experienced.
The initial setup of lighthouses was a pain.
Lots of restarts and re-boots to get the lighthouses initialised and tracked.
Now that the lighthouses have paired it just takes about a minute when I start up PiTool for them to be tracked.
If they don’t track after this time, I found that turning the controllers on made the lighthouses track.
Also had the USB error show up sometimes. I just unplug the headset from the PC and then re-plug which generally fixes it.
@flash66 I highly doubt you will be able to go back to .76 as every time I try the headset will not connect.
I have even tried .72 still will not connect.
I still have the issue where my headset is not tracking.
The controllers and lighthouses are tracking but not the headset.
I have tried just about everything to get it to track but as of yet have been unable to.
Have spoken to Sean and was supposed to have a Teamviewer session for yesterday (Monday) but didn’t get a reply?
My headset is gathering dust as its unplayable for me even without base stations as the internal/gyro tracking keeps drifting too often and I have to constantly re-centre the headset.
I am a pretty patient dude but its wearing a little thin!