I am experiencing an issue with my custom modpack forge server, where when I travel on some kind of mount (horses, Hippogryphs, boats, Chocobos, etc.) I will start violently rubber-banding back and forth while the server console spams "___ moved wrongly!". I have done alot of digging around and what I understand is this has to do with the server side checks that prevent players from moving too fast. However, none of the solutions online seem to work for me. I have made sure to allow flight to true, I have disabled the ElytraMovementCheck gamerule, and have tried both the MTQFix and Gotta Go Fast mods.
Something I have noticed is that I only have this problem when attempting to ride/fly on these mounts around other players on the server. If I am alone,or far away from other players I can do it no problem. So my guess is the problem lies around how the server handles movement speed around multiple players. I had found a reddit post a few days back that describes this issue of rubber banding around other players, but have since lost it. Anyone have any suggestions as to what might be happening? I will post my modpack, general specs, and my server batch file text below: