I've come to choose avast AV free as my antivirus because of its reputation as being accurate and lightweight. So far it worked pretty well for me for the greater part of a year.
A couple of months back though, its behaviour shield irregularely started to consume more and more of my laptops resources, up to the point where it was barely usable and even the most basic programs didn't react.
The spikes seem independent of my activities, and don't resolve until i reboot the computer. Disabling the behaviour shield on the runnning system didn't work consistently, which may be due to the slow responsiveness of the overloaded system, as it actually only halted the task once, 20 minutes after disabling it in the control center.
I've already performed a full repair through avast's inbuilt tool, which resolved the problem for the moment, but just for it to reappear a couple of days later.
As of my understanding, the tool fails to free ram and accumulates ram usage until there is no free memory left.
When this is happening, CPU usage spikes to up to 50% as well.
I've added a screenshot from today below, showing a ram usage of astounding 2.6 GB. It's been at 1 GB this morning, and slowly climbed up from there.
For now I've disabled the feature, but I'd be happy to see this problem resolved, and being able to use it again.
Thanks in advance
ryu2k