Dark.Revenant, for the next update to this (whenever that happens), could you add a setting (or two, or more) to settings.json to control the frequency/magnitude of crusade events, to which I have noted from a number of posts drive up fleet numbers/sizes to levels that eat up far more RAM than they should?
As one of those poor sods who is stuck running a 32-bit OS (Windows 7 Professional), I can point to this mod as the most likely cause of my campaign saves failing to load after not even 2 months of in-game time, due to sheer number/size of fleets involved (already upped the memory allocation in vmparams and starsector.bat to '-Xms1024m -Xmx1024m', still won't load them).
Campaigns started without The Knights Templar loaded don't seem to suffer from this issue, although I do also have v0.3.2 of the ICE mod enabled, in addition to all three other (updated) integrated mods with Starsector+ v2.0.5, LazyWizard's Console Commands and Common Radar, as well as the requisite LazyLib and ShaderLib (all of which are the most recent versions).