PSA: Mouse Input is broken in this game (looks similar to bad frame timing)

At this point they should just establish a small group of volunteers of affected players, to allow in depth analysis of the affected machines in order to better understand the root cause of the issue. But I assume this isn't feasible due to using closed-test builds and other proprietary tools etc. they wouldn't want to share.

I would volunteer my free time, sign an appropriate NDA, if it meant this issue would have a better chance of being solved.