Hi,
I've an Avast Internet Security 17.5.2303 on a Windows 7 Ultimate desktop.
After the last upgrade the UI came very sensitive. If I scan something (file, folder etc.) the process avastui.exe will take almost all of cpu. The Sysinternals Process Explorer shows that threads by start address ucrtbase.DLL!_crt_at_quick_exit+0xb0 shares the cpu load.
If I open Protection / Antivirus I'll get "Loading" on that tab an a thread. Also the Result / Details button has same function.
Logging off and in again helps but that's not very convenient;)
- Esa H.