Not sure what headset you have but I have an Oculus Rift and I had the same issue until I changed the Vorpx setting to SteamVR instead of Oculus Home and then all the jitters went away. Wish I knew how to fix it under the Oculus setting though, not a big fan of SteamVR
i’ve tried all the troubleshooting steps you mentioned to no avail, but changing the setting to SteamVR seemed to solve the issues for some reason even though I have an Oculus device. Not sure why, I rather avoid using SteamVR.