Future Retro Swynx - Manual (Page 11)

If the sequencer you are syncing has an adjustable loop point, set the
number of steps to loop for that sequence to even divisions of the Clocks
Per Measure.
Use TABLE 1 to select the ideal number of steps to loop within your
sequencer for each time signature.
Using loop point values other than those listed will produce an evolving
selection of steps. If you are the experimental type, this may be just the
thing you are looking for.
Clock output types can behave slightly different with different time
signatures. We will now discuss these differences.
MIDI
When using time signatures 9/8 through 8/4, set the external MIDI
sequencer to use an internal time signature of 4/4.
When using time signatures 3/4 and 6/4, set the external MIDI sequencer
to use an internal time signature of 3/4.