DRC Vehicle controller does not respond or responds very slowly in DRCSim 2.3

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Hello everyone, I have upgraded to DRCSim 2.3 and since then I can't seem to control the DRC vehicle, aka the polaris ranger. I used to operate the vehicle by: rostopic pub /drcvehicle/gaspedal/cmd std_msgs/Float64 "{data X.X}"

When the vehicle is in motion, and after applying "data 0.0" the vehicle doesn't seem to stop.

In addition, the steering process takes a lot of time to turn.

Any ideas how to improve?

Oded