Hi vdr,
I tried twice loading a historical test game (first time, I've always played campaigns) and it crashed to desktop both times. I never alt tab, I do a full restart before every session with nothing running in the background. I usually save every couple of game days, submerged with no ships around. Also I TC up to 256 only. I don't quite know where the save file can be found and what file type they are. Thanks for any advice you can give me!