It was actually like that for me back on my old system when I had all the graphics on low. Since the last couple of patches and a better computer and hey, CTDs all over the place especially after naval battles, but maybe that's because I never bothered to play the naval battles before.
Settings-wise I have everything on Ultra, except for Shadows which I have set on low. I play all the naval battles as well as the land battles because I hate autoresolving so I play every battle

my guys just line up and dont fire sometimes.