Hi Ian,
I have Windows 8 on my laptop and Windows 7 on my desktop. I have gotten used to Windows 8, and while I would prefer having 7, 8 is much faster and runs more efficiently. I have not had any issues with Visual Studio/C++ on this machine, or with any other programs, really. Then again, I have had Windows 8 for over a year now, so I have made some changes to it (disabled apps and side-swipe, cleared out a lot of the extra garbage that I don't need, etc) and have gotten used to it. I agree that Windows 7 is better for developers, but I am able to use 8 for development just fine. What version were you running?
Anyway, I don't blame you for switching back to 7. Glad to hear you've got things under control!
Best wishes,
Matt