Hi Joe - I tested using BSP’s track 1 for the reset pulse to the ER-101, but there was no difference - the ER-101 still lags by a 16th note, i.e. 1 clock pulse.
To confirm, I don’t have this problem when clocking and resetting the RYO Penta sequencer or the Ladik S-180 sequencer.
I’ve reported the problem to the Arturia tech support team, and they’ve (not unreasonably) asked if I have this problem with other sequencers. I can guess their reaction when I tell them that its not a problem when driving these other sequencers from the BSP.