Right now, it looks like the non-Supporter LifeMap delay can dip down to ~30 minutes on off-hours (overnight here in Eastern Time) and it can kick up to (right now, 2pm Eastern Time) a 3 hour delay … I can’t recall what its peak was yesterday, but I think it was in the 4-6 hour delay area.
I’ll take sub-6-hour delay as “good enough” right now. Lots of emphasis on right now, because I’m also fighting to reprocess data from my screwup (detailed here) and fighting to speed up city sync work. After those two are sorted out, I can take another look at the LifeMap builds to see if I can improve that.