When I use malwarebytes or superantispyware, Avast uses 60% to 70% of my CPU how do i stop this,without shuting avast down when I scan?
I should have mentioned,I have them both excluded from avast.
Excluding the file, just stops that file being scanned, it doesn’t exclude what it is doing.
Previously I have always been an advocate of pausing/disabling the avast on-access shield (what was the Standard Shield, now File System Shield) when running other 3rd party security scans for basically these reasons.
If you have a resident AV its task is to scan files that are going to be opened or created or modified, etc. So you can hardly complain when it does just that, the other 3rd party security scans are going to be opening files to be able to scan them and avast has a hook so that it first scans the file before releasing it for whatever other reason it was being opened.
So you are seeing duplication of scanning which will a) increase CPU usage by avast and b) also increases memory usage.
For the most part on newer more powerful systems these increases in resource usage will be negligible, barely noticeable, but in those systems with lower specs, CPU, RAM (something you leave out of your signature) then you are going to notice it much more.
So you have to decide to either put up with the increased resource usage as that is what a resident AV is going to do or disable the file system shield whilst running a 3rd party scan.