Yo, I’ve got a MK midi-keyboard in the MIDI in on my soundcard and
on the “MIDI Input Config (master keyboard)” I’ve selected Delta AP MIDI and it works fine as long as I play one note =)
If I play a chord, C for example, the vst’s only “play” one note, usually the last note (G).
But I don’t know if this is a MIDI problem cos Renoise only “plays” one note if I take a chord on my keyboard (with ABCJFKSLDHFLER/"#!"/&=23618790 you know 
) too.
Peace out