The attachment is a script that helps you to identify if your native PC exists the problem of long time to handle a file. Some of the PC, usually laptop, have the scenario that opening a file would take >2 seconds lag. If your laptop have the problem, it is suggested to reinstall the windows instead of using the OS that came along with the laptop.
Usage: You can define your own "MyCommand" variable for the test script. "rem" is used to mark the line.
Code:
rem set MyCommand=ptime 7z e -y %Myfile%
rem set MyCommand=dir c:\
set MyCommand=dir /o/b
My test for command "ptime 7z e -y %Myfile%" is less than 0.01 second.