Slow Windows 7 and problems after AVG instalation

Hello Leandro,
We apologize for the inconvenience caused.
AVG works fine in Windows 7. Sometimes Computer will face slowdown issue if the RAM Size is low or if you are running more Programs at the same time. Could you please let us know the RAM size of the Computer ?
Thank you. Joyson, AVG Customer Care.

After I installed AVG Protection (free antivirus) my computer got very slow. Got a very slow boot, I could only use the internet after a long time of waiting. I have a Dell Inspiron R15 7520. Also the Dell turbo boost stopped working, got a malfunction. It took me hours testing my PC to find out what was causing all this problems. Finally found out that was the AVG Protection. When I uninstall it, my notebook get back to normal, fast as it should be, and if I install it again all the problems comes back. So AVG works just like a bad virus for my computer.
Hello Leandro,
We apologize for the inconvenience caused.
AVG works fine in Windows 7. Sometimes Computer will face slowdown issue if the RAM Size is low or if you are running more Programs at the same time. Could you please let us know the RAM size of the Computer ?
Thank you. Joyson, AVG Customer Care.