Saad, Have a look @ this article (http://avgclick.me/AVGtechnical).
AVG Guru
Your virus scanner program slows down the DVD-ROM read speed. If I insert a DVD disc into the DVD-ROM drive after turning off your virus scanner program, then it reads a DVD disc faster.
Saad, Have a look @ this article (http://avgclick.me/AVGtechnical).
AVG Guru