Dear Avast Team,
Please note I also have similar problems(100% CPU/computer hangs).
It seems that the usage problem happens among a large group of Avast users and uninstalling Avast to 'save the computer' is quite common, would Avast Team please make an announcement on top after your have solved the problems, so that users will know when to re-install Avast again?
My computer freezes during the process and I have to directly turn my computer off, which may in turn harm the PC. Therefore, I hope that before reinstalling avast again, at least users could know the problem has been fixed.
Please consider my suggestions. Thanks