I believe, and I could be mistaken, but I think I saw my computer refer to the game Airships Conquer the Skies as 32bit.
This might possibly explain why there's some performance issues. I don't know how difficult it might be, but I do hope we can get a 64bit version in the future (hopefully still compatible with all the mods) I think that would be a pretty good part of resolving some of the issues. I'm really enjoying the game so far. I believe the data collection and crash reporting should be disabled by default though, that gave me some serious discomfort when I accidentally discovered it. I'm surprised that ASCTS is the only game like itself. It's a really special hidden treasure and painfully underrated. Nobody seems to notice it, and that's kind weird for me since it's one of those hidden great games that's huge fun.