I have read that thread and have tried every recommended version. I’m not a coder, another reason I purchased your asset, so I’m not sure how to do a bunch of coding changes. It’s a known Unity bug that they won’t seem to fix, and that I didn’t know of. I literally can’t use any version beyond 2018 unless I get a new PC, which I can’t afford right now lol.
There are numerous threads which say that certain versions are fixed, but I tried and they are not for me. I’m not even on a system that I can use link with, so I have to currently build and test directly on the Quest. Jitter comes from the Unity bug for sure. I know the Store says this version required, and I thought it would work, but I only recently learned about this bug and now realize there’s no way I can’t use your asset unless I want to induce headache and nausea lol.
I’ve purchased many assets over time, even several within the last week. They all work for me, but this one doesn’t. I don’t want to waste anymore time trying to get it to work really. Would appreciate a refund. If not, then enjoy my $30 donation 
Jittery motion on Oculus Quest page-2
Unity Issue Tracker - [Oculus GO][Oculus Quest] Object is jittering when position is being affected by Time.deltaTime