Hi,
I doubt that anything has changed in the PoKeys, I asked so I could find out what the cycle time was.
I suspect if there is a change it will be in Mach4. If I recall there is a post on the forum which talked about the averaging applied to the spindle speed DRO,
haven't had any luck finding it so far.
The two things which could affect the DRO in the manner that you have described are 1) the motion controller cycle time is changing, maybe some other process or software
on the PC assuming priority that is causing the motion control plugin to run at odd intervals, 2) the averaging applied to the numeric data has somehow altered.
Craig