What if sims 3 often crashes?

Close antivirus software such as 360.

Input method returns to the system default value.

Don't run other applications in the background

Focus: lower the picture quality and change the full-screen game to window operation.

I am an m4 player. I always flash back and stop working when cutting the picture. It would be much better to run in another window. I can't completely guarantee that I won't flash back, but it will be less frequent.

M3 seamless community does not seem to need to cut the map? But I suggest giving it a try.