I can confirm! This problem is most likely related to DSC as it occurs on both my Vive Pro 2 and 8KX!
https://community.openmr.com/t/can-we-get-acknowledgement-of-the-pimax-specific-rtx-4090-latency-lag-issue-please/39665/10
https://community.openmr.com/t/8kx-lag-latency-update/39728/3
I tried to post this at r/nvidia but they took it down "Rule 1 no troubleshooting" and I an unable to submit a ticket to Nvidia (always returns "Error"). If anyone has open comms with Nvidia and can relay this problem that would be great.