Mauri,
I changed my Polling Frequency to 100Hz. Still no change. However, I think I may be having power issues; I keep getting the Hicon Plugged in message, the message that it shows when you first connect the controller. Does that make sense? I'm going to try this latest version of Mach 4 also. It was released yesterday (5-24-17) I think.
Also, the screen that was popping up in the background is the Debug Window, or whatever it is called. It is a checkbox on the first tab of the Hicon config screen.
Something strange about that screen, it shows every instance of change in the controller (I was messing around with it) and noticed when I jog the Axis it updates an internal position in the Hicon. Nothing is changing in Mach 4, but there are numbers changing in this debug window.