Desyncs, Animation Juddering and Server Swaps/Reloads

To Reproduce

Load into Arelith (https://nwnarelith.com/) or SWLOR (https://starwarsnwn.com/)
Play for an undeterminable amount of time, this does not seem to overly matter much but longer play may be linked.
Either log out or be sent to another server which results in similar. (https://nwnlexicon.com/index.php?title=ActivatePortal)
Log back in or successfully arrive on the other server.
Transition an area or more.
At this stage the juddering will be minor or a full desync can occur.
In the case of juddering this may take many such transitions for it to then turn in a full desync, and in some cases it can even go away.

Specifics

Windows
8193.35-40
Steam/Beamdog
Content overrides? None aside server Haks.
Regression? Unknown, first known instance for Arelith occured around the following events release: https://nwnarelith.com/index.php/news-list/guldorand-launch-event However it may have been occuring even earlier.

Clarification on terms Desync - The act of your character being stuck in position animating to movements or any combat, no models aside your own and the tilesets will load but you can still "move". Judder - Key frames start to vanish on model movement, animation still occurs, extremes seen can vary from tiny distances to full tiles being skipped between the position of your character being visually updated.

Beamdog / nwn-issues

Desyncs, Animation Juddering and Server Swaps/Reloads #506