just for testing it, i'm using a leprecan 612 controller (borrowed, but it's not set up in any bizarre way that i'm aware of) and the unit is terminated. it's connected with a 5 to 3 pin 12" adapter cable (mic cable, not dmx, but at this length does it even matter?)
what i mean by stuttering is, if you go from 255 to 0 in a short amount of time, the LEDs don't go down totally smooth, they sort of stair step off. a ~1s manual fade seems to make the light go through a choppy 6 or 7 levels of brightness to off or fully on.
the only thing i can compare it to is like framerates on video, it's like a 30fps light fade crammed down to 5fps. if i fade it up super slow, it's smooth, and really fast it's not noticable.
dunno.
-a