The player moves slow when walking and fast when turning. Also, the player moves when shiftlocking even if they are trying to stand still. All parts in the stand are massless and have no cancollide
There is an invisible part is attached the players humanoidrootpart and the invisible part is attached to the stands humanoidrootpart. The stand is offset to make it look like its floating behind you.
Try using align position instead. The position set will always be relative to the player rather than the world so it would work fine. Also, is that part inside the HRP also massless and cancollide to false?
This happens because you’ve welded a part to the player character. If you’ve tried enabling massless on the part that you welded to the player and that doesn’t solve it, you can try using CFrames to position the stand instead of welding it. Do avoid using unanchored / unwelded parts or rigs as this is easily exploitable and can just randomly break because roblox physics is kind of bad. Also avoid welding entire characters to another character as this usually causes issues because of conflict with the two humanoids.