I must also agree with the avast scanning, once you have it on your system
it seems to learn your system and adjust itself, this is just my opinion,
but it has been much friendlier on my system than anything else.
However, I personally do not mind the occasional pause as it works, this just lets me know that it is scanning
and keeping my system safe. For my system, any pause that I have seen in nothing more than a second or two.
Not bad considering all the stuff I have running on my system...lololol