I have been using NOD32 antivirus for years now on my PC running Windows 7 Professional, service pack 1. And my computer has been extremely slow for years but I assumed it was something wrong with the computer. I recently stopped running the antivirus software and my computer was fine. Programs opened quickly, I could navigate with no issues, etc. I did some research on the topic and it seems that a lot of other users have the same problem but I didn't find a solution. I'd appreciate any help, as I just renewed and don't want to have to switch to another virus protection software.