I have started a new game, to fully enjoy your mod, at first there were no problems, but now, after 8 hours the game started to lag like crazy. Every 2 second the game freeze for a 0.5 second or so. Unplayable!
I tried to toggle of some of my mods, and narrowed the list down to your "Cursed EXP" With out your mod the lag is gone, so we know who to blame.
Since it is a fresh game start there are still no large factories, and I didn't explore much, so those factors shouldn't cos problems.
Taking down all my buildings also didn't help.
I thinking maybe talents "regeneration" and "inmolation" have to do some thing with that, they do activate every 2 seconds (read that in description) and that how often my game freeze.
Please look in to that.