Hi,
I did some tests (cables, USB hub,...) and the issue was the same until I test the APC with Ableton. As It was working like a charm in Ableton, I've tried with Resolume again and since this moment, I don't have the feedback problem anymore!!
Magical!
But...
I was so confident that I decided to map all my devices for a full rig compo. And I've discovered an other problem, maybe not from Resolume but from the APC mini. Feedback is still OK but even if my different controllers are on different midi channels, APC reacts to other controllers mapped in Resolume. And so the lights are not corresponding to my config.
I have to deepen it.
I'll be back...