Movement not smooth anymore after upgrading to 5.5

So i just upgraded to unity 5.5 and previously i when i was controlling my spaceship it was really smooth but now the movement is jerky, clunky and has irregular pauses in it. I use the mobileSingleStickControl; the mobile control rig script and the joystick scripts.
To rotate my spaceship object i use addTorque like this -
float rotationY = CrossPlatformInputManager.GetAxis(“Horizontal1”) * yawSpeed * Time.deltaTime;
myTransform.GetComponent().AddTorque(myTransform.up * rotationY);

my rigidbody has settings - mass = 1, drag = 3, angular drag = 15.

Like i said, before it was really smooth, i didnt change anything apart from update to unity 5.5. Also lag seems to make it worse. Does anyone know what might have changed? Has this happend to anyone else?

I upgraded to hopefully fix another problem i have had no luck fixing and now i encounter this. I think i might just cry.

I fixed the issue, it was to do with a different script, but im still not sure what caused the problem when i switched to 5.5