Don't internally activate the timecodes=1 (or whatever the setting is really called). Only pull the stunt if it's really activated in config.ini. There is an associated slowdown with sending characters to the serial port that some people might not want. At least that's the way I remember it working.

Plus, every once in a while the empeg team introduces a bug into that feature that isn't necessarily noticed right away (happened once during 2.0 if I recall), so it's best to leave it alone unless someone really needs it.