2 network owners in a vehicle moving

[RMofSBI]

Check out this solution here, it worked for them and should work for you:

A way to split model network owner?

Hello, I am currently working on a tank and want the main tank body owner to be set to the player, while turret is set to the person controlling the turret. At the moment, I have it setup where the driver is the owner and the gunner needs to use remotes to rotate the gun, which causes noticeable lag. Splitting them would fix the problem. The tank is built using all constraints. No welds or motor6d.