KSP v21 keeps crashing. Killing gaming experience. Help?

[mike88cab]

I have a 2011 imac, at the time of KSP going "unresponsive" according the force-quit window, it acts like a application crashing for using excessive RAM to find at peak KSP is using no more than 2gb of my 4gb ram total. Graphics card readings are showing its not under serious strain. I am at loss to find out what going on. I do have 2 mods(Novapunch, core-Anvil) both claiming to work with the new v21. They where working fine, I also had issues of the top-right icons not working(load, save, new, close). I learned if I deleted the whole save file of the saved game I was in and started over everything works. v.19 worked great, no problems at all. Whats the deal here? I wanna be able to build a 50 part or more ship without having to force-quit and leave off where I saved, let alone fly around. lol Any help would be AWESOME! Much thanks in advance.

[OopsThatNotWork]

Would moderator please move this thread to support please?

on a side note, i dont have an imac,but I dont think it has to do with having too many mods if those two are the only ones u using. hopefully someone will you help quickly.