I have 8K X & 5K XR. Used them both on 2080ti, 3090 and now when I upgraded to 4090 I have a movement lag too. Done everything you can think of, rolled back Nvidia drivers, Pitool & firmware versions etc, HAGS off (and tried on), uninstalled and clean installed everything. Tried all different settings in Pitool and Nvidia (eg smart smoothing, hidden area, parallel projections, low and ultra low latency modes, pre-rendered VR frames etc) and I cannot fix the lag.
I put my 3090 back in and both the 8K X & 5K XR are perfect as before. Put the 4090 in and the lag is back on both headsets.
Pimax suppprt asking me questions like if I am turning my head faster than before and no acknowledgement of the problem at all. And now they seem to be ignoring me.
When I got the hand tracking module they insisted it wasn’t working because of my PC. Then sometime later they released the Pitool version with the ‘fix for leap motion not detected’.
There is clearly an issue with Pitool or firmware and the 4090. I’m sure it will get fixed eventually but in the meantime it would be good if I wasn’t ignored or if at least there was an acknowledgement of the issue.
Right now I have a choice - have no VR, or put my 4090 back in its box (and I really need to sell my 3090 as the 4090 was far from cheap).
Pimax hardware is great and I always support them, and was planning on buying a 12K but the software and customer support don’t leave me feeling great right now, and I bought the 4090 specifically for the 8K X.
Come on Pimax, please acknowledge the issue and identify a fix quickly.