I've been working with Microsoft to clean up some corrupted files to enable my SP3 to install Windows 10. It took me 7 1/2 hours to do the download yesterday. As I'm downloading the Win10 file, I did a speed test on my SP3 (all updates installed) and I'm getting less than 1 mbs. When I do a speedtest on my iPad on the same wireless network, I get a download speed of 7 mbs. I asked my network administer about the discrepancy in performance and he says he's never seen that before. Anyone have any thoughts?