Of course, I'd forgotten that. So my iPad2 may be fine, I will try MF3 on the iPad3 and see if it's worse than on the iPad2. Does anybody here use iOS9 on an iPad2 (mine is on iOS7, the iPad3 is on iOS8 and the mini on iOS9)? Ironically MF4 seems to run just fine on my old iPhone 4s (admittedly with the iPhone reduced graphics set). Which iOS are you running RR?
I’m running iOS 9 on my iPad 2 and by itself it’s very responsive. But running MF 4 on it, in my particular experience, is very sluggish. The iPad 2 stays docked and is used only for backup, if the wireless or heaven forbid, my iPad Air 2 decides to tank for any reason.
But running MF 4 on the Air 2 is great. It responds very quickly without any lag, to my eyes. I think MF 4 was really designed to take advantage of the more powerful Air and Air 2 plus any new models like the Pro. I also run MF4 aka: My Fader 4 on my iPhone 5C with iOS 9 for remote work and it runs just fine, as you mentioned Sam, with your 4S.