TweenService + Physics replication issues

I - as you can probably tell by my recent posts/activity - am trying to make a smooth vehicle system for first person. However, I have run into issues with the physics engine etc. so have had to think outside the box a little.
I feel the best way to do it is by using TweenService on a part, then by using a part with an AlignOrientation and an AlignPosition, both with rigidity on, to make the part use physics whilst still following a tween path. However, this has caused issues with replication. It’s hard to explain, so I will attach both a video and a place download here.
C__Users_samjt_Documents_PlatformTesting.rbxl-RobloxStudio2024-05-2422-04-59-ezgif.com-optimize
Platform Testing - Copy.rbxl (50.6 KB)

Help much appreciated!