Does CC slow down your game?

I have a Dell, Windows 8 platform and it's pretty good but when it comes to the Sims 3 it's so laggy. Maybe it's just my computer but my game, even with no cc, is constantly crashing and freezing. I went through the crashing checklist and deleted all my cc, created a backup folder and deleted the cache etc. but it didn't help at all. At this point, I've got nothing to lose. I LOVE some of the cc made online, especially Anubis Under the Sun is gorgeous and actually some are even better than store game content! The Sims I make without cc just aren't as good as the ones with it. If I were to download cc, would it mess up my game even more? Thanks in advance sorry if this is the wrong category.