FLStudio 12.1 on Windows 10 with an M-Audio Axiom MIDI controller, and I've had this problem for a long time. I cannot seem to link any controller knobs to individual parameters other than the Modulation and Pitch ...
FLstudio everything works fine but after 5 minutes the audio input/output option does not give me an option to choose any type of audio (headphones and laptop speaker). The audio option then says ‘none’ and ‘disabled’ in red writing ...