And now I suddenly have lag to a degree that makes the game unplayable. Never had any issue until this recent problem with my workers. Related? Coincidence. I have all my vehicles grouped (which was a big help when it was implemented) and all the settings set to maximize performance. This is very frustrating.
The lag can have different cause. The vehicles grp is wonderful for construction, but is inefficient for harvest, because the bot will don't work in parallel, and sadly they will work serially.
In any case, very big colony can suffer lag, massive population increment can cause lag, massive map same music.
Some time, single map become unplayable.