What is the best configuration for full V4 AV? I want the best security setup (Advanced Heuristic) but also want it to be as light as version 2.7 was. My beta time with V4 was horrid, with AH turned on the system was extremely sluggish when opening new files or browsing files etc, that being said to a 4GB Dual Core 3.2 Ghz Core2Duo. So now, I know that V4 has about 3 Places where I can tick AH on (for RealTime scan), so I know that I don't want it everywhere. That being said, what is the most logical and most economical place to turn on Advanced Heuristic.