Why don't you simply tell to your antivirus software to do its business in some other places than your working directory? ( Exclude Paths ) and ignore every action done by Visual Studio executables ?
By the way, this is one of the first things to do to get better performance when working with a complex IDE like VS that can create, move, delete thousands of files when working.
If I remember well, the AVAST has its exclusion list in File System Shield, Expert Settings, Exclusions