Hood,
You didn't make that distinction in your post.
However, I mis-spoke. I didn't actually set the debouce up, I ran into the problem when I was playing around with MachTurn. The debounce was set to whatever the default is, I suppose, because I had never messed withit in MILL or in TURN.
I just noticed that the RPM would read to 350 and go no higher in TURN, yet it looked accurate in MILL, so I started comparing and experimenting. I just set both boxes to zero in TURN, and the RPM DRO started working right.
Thanks for the heads up, though. I'll see what I can find in the docs about the different debounce settings.