Sooo...I have a lot of mods and CC. I have a very powerful computer that can handle it, and there've been no issues at all. However, I noticed with CC hair, in CAS it looks perfectly fine, and in-game it looks screwed up. For example, one sim had CC black hair, and in-game, the hair looked right, but there were blonde streaks with the black. Another sim, had hair without bangs and there were light pink bangs mixed with the blonde hair. What's going on? WTF? My sims cannot be lookin' like this. Thank you!

Turn off Laptop Mod via Game Options
that should fix it..
you might need to restart your game for it to take effect.