I’m trying to do the same thing but sending PC messages from a Synthstrom Deluge instead. The messages are sent right at the beginning of the bar so I keep having to wait a full 64 steps before the next pattern will play. This issue is extremely frustrating and discussed in many other threads on this forum but no word from Elektron regarding a fix. This issue effects some Elektron devices (AK, AR etc) but not others (MD), I don’t know why this goes unfixed. The only solution I have found is to sequence notes from the Deluge but since the Rytm doesn’t send MIDI out I’m left spending hours inputting each trig for all my patterns, what a waste of life. I should be performing, but I’m not, I’m sitting in my studio devising workarounds for poorly implemented fuctionality. Their units sound great but everything else is mind numbing.
I’ve suggested in other threads that kits/patterns be swapped upon receiving PC messages. Even if there was a lag i.e. message received on step one, kit swapped on step 2, pattern swapped on step 3, it would still be in improvement on the current limitation. I want to be gigging! This is so frustrating.