@Privateofcourse : well first after I complained about speed issues with V6 stable, I found the pre-release version to be much faster. And second, if you got such issues as what you describe in your post, then your Windows install is broken. Avast just doesn't do such things to systems.
If that allegations was nearly true, all AVs would be the same impact on the overall PC's performance, and no one would ask: "hey, what AV is low on resource, low in memory footprint and you don't notice it is there?"
And... once YOU found 1021 version faster, NOBODY has the right to find it slower instead? Common! If you are in PMS and has bad humour, it is better not o post anything, YOUR SILENCE would be a poem.