I just upgraded to Windows 10. I have a Toshiba Satellite c855, core i3, 6 gigs of RAM. Before doing the upgrade, my computer was working fine, but now it is laggy, for example. If I'm playing my music, I can hear it getting stuck for a second and then it keeps playing normal for like 5 secs, and then it does the same. It's not only with while playing music. I noticed that also when I'm working on my computer, it kind of freezes for a second and so on. I already tried updating my audio/video drivers, but nothing seems to solve my issue. What can I do? Please, let me know!