office is a separate piece of software, not windows 7, and personally my copy of office runs like gangbusters on it.
Windows 7 took some adjustment from XP, but it runs great and tends to have a lot less random problems like my xp box did. I'm quite happy with it. Pretending 7 has quality issues and pointing at office (which, interestingly enough, also runs great afaict) is nonsense. Worse, I like the ribbon. I took me 2 days to figure out where things were now and I find the ribbon much better for reaching tools and dialog boxes I would have a hard time doing in the old style of office.
All your complaints are, as far as I can tell, totally in your head.