I dont know why, the game is using less than 20% of my GPU and the map still lags, every start of the month it lags as well. Im only 25 years in the game, 800 stars and 12 empires, all dlcs and no mods. Everything else seems fine but the galaxy map is lagging.
There is certainly a noticeable lag when using larger maps as opposed to smaller maps, even when the maps are more-or-less empty, and then the lag only gets worse as the game goes on.
I also looked at my Task Manager when running different maps sizes and while there was certainly more resource usage for the larger maps, it wasn't anything insane.
I started looking into the game files, and I am wondering if a lot of the lag is actually related to a handful of the "on_action" items.
Some on_action items are triggered by simple things like "on_entering_system_fleet" (a fleet enters a system), "on_crossing_border" (a fleet crosses the border), "on_planet_bombarded" (a planet takes bombardment damage - calculated daily), and other events that happen on a fairly regular basis and I also wonder if all of these events are triggered by neutral entities that are spawned in the galaxy.
@AndrewT Do you know how much of an impact the on_action events impact performance? I suspect that these on_action events are what are responsible for a lot of the game lag we feel (in addition to pops), but I am not entirely certain how I would determine that.
I am attempting to work on a mod that shifts the on_action events around to see if it improves performance, but I don't know when I will get that done since I have to be careful not to shift an event and break the game lol.