The Enhanced Motion engine layout is a continuation of an earlier Question I raised regarding a PAN function and Answered by jkhiser. It will continue to run if not stopped in Design Mode. Actually, why does it even run at all? I think of the basic function as an oscillator (metronome) that can cycle forever. But is it stable? Notice the behavior of Start when first tapped. It remains lit for one cycle and goes out at the start of the second cycle. This modifies the up/down behavior of the Driver. The Snap Sub to Value is essential for the Halt and Stop. I use 10 ms. If not set properly, it may appear to freeze MDP.
Enhanced Motion Engine (PAN)