Well, all I can say is I have 8 of the 64 LED Pros, and if I do any fades less than 3 seconds, it appears they come ON too fast. It's almost like there is some sort of minimum threshhold, but if I do it slow, it works fine.
I do this one scene where I am flashing cans. One side is flashing red, the other blue in an alternating pattern(you just have to see it, I'm going for an old school effect). There is no cross-fade between red and blue, either full on/off dimmer. I notice the lights never really go full off due to the timing.
Also, I have this rainbow chase effect that I programmed using MyDMX, It sucks because the timing is too fast so it often never really gets to change between the colors nicely. If I slow it down a lot, it works fantastic.
I have the same issue with my Mega Panels(4) and Mega Bar 50's(8), but since i know what to expect, I am able to work WITHIN those limitations.
I know for a fact there are multiple issues at play here. I think DMX mode is an issue, lack of knowledge is an issue and lack of familiarity.