After installing a program, Avast takes the initiative to scan all the files that are on my different disks …

Avast then uses 25% of my CPU (i5 3570k) and it this lasts very very long …
I did not have this problem with the .2314 version (release version) …

Can I turn off AVAST’s scan of all my disks to see if the problem continues ?

Another problem is that Avast does not purge its data in RAM. After a scan it takes more RAM, it’s normal but do not purge after its operations …
I had this problem once already described on the previous page or Avasr occupied 2 GB of ram …

https://i.imgur.com/XCdpWgt.png