Why is my player teleporting and derendering stuff

Hello! I have a problem in my game that has persisted a long while. It is hard to explain so here is a video example

I believe the error could be caused by some sort of Roblox physics issue.
I think this is the case because it only occurs when the player utilizes various movement mechanics.

This was a minor error for a while, however when I removed an outdated anti trip script (Using a body gyro), it started happening every 2 seconds.

As of right now I am setting ragdoll and falling over humanoid states to false, but it does almost nothing.

I would really appreciate if someone could help me understand why this is happening, thank you!