Locomotive runs significatly worse in the client than in studio

So recently i was rigging up a locomotive using the Vehicleseat 2 chassis for a friend of mine, i got the engine to run perfectly in the studio edition of roblox, i wanted to run it in the client version to make a video showing off all the new features i added on, when i published the game to the roblox website and went to check it out, the engine ran horribly as if all the hinges were off. the thing is this was a problem beforehand but i had managed to fix it in studio and updated the place. im not really sure why the client caused the model to run worse than in studio

The Engine running in studio

The engine in the published client

i’ve been doing this for a few years now but never ran into an issue like this before

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update: i tried it in another place and had the same result, tried out another one of my engines and it runs perfectly fine. i suspect somehow the rigging got messed up on this engine again which i don’t know how it could considering it runs fine in the studio edition of roblox

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second update: turns out the rods needed to be massless and the torque turned down alot, dunno why it didn’t show up in studio and only the client but it works now

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