I have also been seeing similar issues on a marathon deathworld. When I post artillery on an island that the biters can't reach, the attack group just keeps getting bigger and bigger. When the artillery clears everything in its range, the attack group will just find the next closest nest and become ...

For some time, I've noticed artillery is firing from the most distant artillery piece to the target. I could have an artillery placement 100 tiles from a target, and it will fire from 600 tiles away when both emplacements (and a few more in between) are available and loaded. This problem occurs when...

I'm seeing the same in a deathworld/marathon map. Over 200 hours in, no mods. Saw it a good bit over the past couple of weeks; really saw it after .59. It's almost as if their behavior when they start building expansion nests is activated...they don't usually attack artillery during that process, bu...

An update after a weekend of playing on .59. I had moments where UPS would run at 60 again. Sometimes, though it would crawl at 45. I researched the next Artillery range level, so my arty rained fire down and I also used that to explore new chunks. Needless to say, lots of new and old areas were for...

My marathon/deathworld base was running at a smooth 59-60 UPS prior to latest experimental update. It now varies widely from 53-58. When the game first loads, it gets up to 60 for a minute or two, then slows down. The mention of biters being a possible cause makes sense. I'm surrounded by biter nest...