Ever since I installed the new version 11.1.2245 on my Win7-64 bit computer and tried to enable/activate Passwords, Avast has been taking 80%-100% of my CPU cycles constantly? Nothing I do seems to bring it down once it starts. Is this expected behavior? Is there something I can change or check to get Avast back to normal? 
Thank You.
This seems a clear case of more un-needed bloat in avast.
Have you considered a separate password manager.? 
And there we have another totally useless post from Arnold >:(
Daffy,
already performed a repair of avast ?
already performed a clean installation of avast ?
any other security (related) software installed ? (or was there)
what process of avast is using a lot of system resources ?
Hello Eddy,
Thanks for responding. Yes, I have tried the repair and a fresh installation of Avast and it did not make any difference. No other security software installed. I just have Avast running.
The process taking up all the CPU cycles is AvstSvc.exe *32. I currently have Passwords disabled so that I can continue to use my machine with Avast running. I got a screenshot (attached) of my Task Manager showing AvastSvc.exe. The 31% is when I just went to the Passwords page in Settings and entered my Main Password. The screen then just hangs for about 15 minutes with AvastSvc.exe taking up all those CPU cycles. After about 15 minutes or so the screen comes back to life and AvastSvc.exe goes back to normal.
When I have Passwords enabled and restart my machine then AvastSvc.exe just starts off with the high CPU cycles and never lets off. I have waited for about 15 to 20 minutes and then have given up. Even if I assume that it’s just working and trying to get something done it’s just too long an interval to be practical. I would also like to add that I see this behavior only on my Windows 7 machine. I have another Windows 8.1 machine and I don’t see the high CPU cycle problem there. On the Windows 8.1 machine Passwords responds almost instantaneously. That’s why I don’t think it’s some inherent generic bug or flaw. It’s just something on my machine that’s conflicting or it doesn’t like
You could disable everything from loading at boot time that isn’t really needed for the system to work and see if it makes a difference.
Reading your post, I don’t think it will but it is worth a try.
At least it will rule out a possible cause.
If it doesn’t make a difference I suggest you do this :
https://www.avast.com/faq.php?article=AVKB33
For goodness sake avast is an antivirus NOT a bleeding password manager,
The word bloat comes to mind. >:( >:(
Then do as I did and don’t install it - use the custom install - only choose the elements that you need/want.