scanning

Hello Kabuljon
 
Welcome to the Webroot Community,
 
I would not worry about the scan complete % jumping so quickly at once.  Remember, WSA scans MUCH faster than other AV programs, and some areas of the scan, like for rootkits, involve so little an amount of files that really the % completed just may not be able to update as fast as the scan goes.  If the % completed is updated once per second, yet the scanner gets through a large amount of the scan within that second, the number will jump.
 
Please see thisThread here and look at the post by TripleHelix (#23) There will be a Video that he has provided showing this very thing.
 
Also look here  https://community.webroot.com/t5/Webroot-SecureAnywhere-Antivirus/Scanning-PC-suspiciously-fast/m-p/6632#M214
and here
https://community.webroot.com/t5/Webroot-SecureAnywhere-Antivirus/How-do-I-know-that-Webroot-is-working/ta-p/191121
 
Hope this helps?