If you're going to a professional anyway, I'd have him look at it while you're there. It could range anywhere from the capacity of your CPU to how many programs you have open at the time. Even my Win8 freezes up when I try and run too many things at once ... which I do often. I also want to say, yes google chrome more than likely uses more memory/processing power. MF was designed for the more tech savvy users and doesn't really bother with all the flashy features of Chrome, lest you add-on spam your MF. If the problem is only consistent when you run GC I'd stick with MF. If it's a very troublesome issue, I can skype call you when I'm free and I'll help you clean up your computer step by step. Cuz ahm a nice gah lik dat.