Rebecca, Have a look @ this article (https://support.avg.com/SupportArticleView?q=computer+slow&urlname=How-to-solve-slowdown-after-installation-of-AVG&l=en_US).
AVG Guru
I had AVG 2013 Internet Security and I renewed my license online to 2015 Internet security. Since then my computer is extremely slow. It takes all day long to run one computer scan. AVG on my computer has the new license number but it still says 2013. I tried to run the quick tune up offered and it took 3 days for it to run. Then it wouldn't fix the problems and it doesn't give me a reason why.
Rebecca, Have a look @ this article (https://support.avg.com/SupportArticleView?q=computer+slow&urlname=How-to-solve-slowdown-after-installation-of-AVG&l=en_US).
AVG Guru
AVG Guru