I am currently experiencing an incredibly high amount of latency after installing BitDefender Antivirus Pro 2011. In the past I have used Norton Antivirus 2011, and then decided to change to BitDefender Antivirus Pro 2011 as it offered a better deal at the time of renewal. I removed Norton Antivirus 2011 by using their own official removal tool, thus ensuring that there are no remnants of the programs left behind to interfere with the installation of BitDefender Antivirus Pro 2011 and subsequent usage.
However after installing BitDefender Antivirus Pro 2011, I am experiencing internet slowdown that was not present while I was running Norton Antivirus 2011. This slowdown is severe to the point where many internet pages will simply not load at all and instead time out. I have checked to ensure that no programs that I have in the background are attempting to download without my knowledge, and I have also followed the common advice of disabling ACV and IDS as well as adding an exception for my internet browser and other internet related programs such as Steam, IM programs and the like.
I have run two seperate scans with speedtest.net to establish the current state of my internet connection, one with BitDefender Antivirus Pro 2011 enabled but with ACV and IDS disabled as suggested, and one without BitDefender Antivirus Pro 2011 running at all. You can find the results below.

With BitDefender Antivirus Pro 2011 running.

Without BitDefender Antivirus Pro 2011 running.
I am currently operating with the following hardware:
Windows 7 (64 bit)
Quad-Core processor
NVIDIA GeForce GTX 460
4094 Mb RAM
750GB HDD (with 500GB remaining)
I hope I can get some advice soon as to how to resolve this problem, as so far the common answers seemed to have little to no effect and the problem continues to plague me.
Thanks,
Hyperviper.