If you are referring to a for a vehicle simulator:

If this is a mod, version 1.45 likely introduced smoother transition frames for passengers within the train-car environment, fixing previous "stuttering" issues seen in the 1.0 release. 2. The Simulation Context: MSFS or Euro Truck Sim

Ensuring the animated entity follows the vehicle's movement without "floating."

Animated Passenger 1.45 Site

If you are referring to a for a vehicle simulator:

If this is a mod, version 1.45 likely introduced smoother transition frames for passengers within the train-car environment, fixing previous "stuttering" issues seen in the 1.0 release. 2. The Simulation Context: MSFS or Euro Truck Sim Animated Passenger 1.45

Ensuring the animated entity follows the vehicle's movement without "floating." If you are referring to a for a