I find myself frequently jumping back and forth to the Preferences>Simulate & Verify Tab to adjust the Simulate Speed settings, since sometimes it's too slow and at other times too fast and I can't quite visualize the Programmed Path.
Simulate Speed
During my time using Siemens NX for CAD/CAM, I found the Simulation Speed Adjustment Slider very useful.
Simulation Speed Adjustment Slider
Any chance this may be incorporated in the Simulation / Verification Control Panel?
Simulation / Verification Control Panel