External Midi Output Polyphony Problem

hey, i use a midisport running out to a bunch of outboard gear. previously this worked great for using renoise note data to control these synths and drum machines, but since the update it’s been totally screwed up. i now have to physically OFF each midi note before another will play, even if it is a one column track (weird), and further i noticed that it can now only output one midi note at a time. I discovered this when trying to control one of my drum machines w/ a renoise track and could not play 2 hits at the same time. just for the record, my equipment and midi box is fine, i tested them in logic and they work perfectly.