I’m not sure if anyone else has this problem, but after upgrading my Avast to 11.2.2261, trying to view my Statictics has become really problematic. When I first try open Statictics window, it works fine for awhile, but soon Shield activity bars completely drop down, List of scanneds stops upgrading, and the moving bar that shows shiel activity starts freezing. Trying to move to Historical data and Component status tabs is also taking a good time… :-\
It (High CPU and RAM Leak) has been reported in a few topics and is an acknowledged bug.
See my post https://forum.avast.com/index.php?topic=185871.msg1309366#msg1309366 and the avast response in the post below it.