Have a similar issue.
Arp just doesn't seem to get in sync with either my Elektron Box or the DAW.
After a bunch of fiddling I got the arp to sync.
On one patch, with a very simple time signature.
Two things seem to be happening.
There is an odd swing to to the arp that makes it sound off, even when it still lines up on the one every new measure.
The arp seems to be trying to catch up to the clock coming in. At 8th and 16th note arp this is a very evident kind of hiccup and would be cool if I could replicate it on purpose! But right now it reminds me of a young me playing bass guitar and jumping in on the measure one beat off.
Right tempo, right notes, ends about the right time but its...off.
I found the timing page of the arp and zeroed that out, but is the default value for swing usually in the middle?
Also it seems more stiff on one of the arp patterns but setting it to 4 o 8 and clearing all the lanes.
Like I can hear it get tighter just paging through and back? Is that right?
Anyway whats the secret Contra Code to make the Arp sync and not suck?