Crashing

This issue has been going on for awhile and I've tried to deal but cant.eveytime I open the game and start to play it will crash sometimes sooner than others.its annoying when doing quest because you start the sims on a task for like 5 hours come back and have to start over.i have uninstall, cleared catche freed memory and space all to no avail. Im a daily player but this is driving me crazy. What can I do.The game never acted like this before.Please help