Media master play back speed

Hi All,


Im trying to get a show going using projectors as liquid light, on a RH4

Im using Arkaos Media Master for content control, it has a parameter called Play Speed, which is on the 2nd beam page.

I recorded a stack with only play speed at 100% and nothing else selected or active in the programmer, then change my fader mode to IPCB.

Now i would expect that when my fader is at 0 my pay speed would be at 0 this is not the case, in fact its more like pay speed 20%.

I have to be missing something here, any help would be greatly appreciated