I would like to know the same thing, as opposed to real inserters doubling rotation and extender speed didn't seem to work, I suspect it's in the control.lua somewhere perhaps the part where it scans due to it only doing stuff after a scan?
There is a way to adjust the mod to sort items faster. However, this can come at a significant cost to performance. Change the 5 in 'if game.tick % 5 == 0 then' (line 112 of control.lua) to a lower number. This will make the splitters run the code that actually sorts the items more often (which is also the reason it affects performance).
Sorry for late answer. But yes you can change thhat number. But due to the sorting of this being as heavy as it is. It hits performance quite hard. If you need a bit more on them so they can 100% match express change it to a 3 or 4. but performance i say 5 is a good number
