The newly installed WIN8 open folder actually will be Kaka, especially open EXE program more folders, through the Resource Monitor view, behind the killer is Windows Defender antivirus software.
The MSE is Microsoft's antivirus feature, while Windows Defender provides anti-spyware capabilities for users, and Win8 has combined these two features into one. Use the MSE users know that it has the problem of card EXE, in the WIN8 is also the case, when you open EXE program, compressed package more folders, it has been scanning AH scan ... so MSE is very busy ...
Workaround:
First full scan with Windows Defender, then you can exclude the trusted EXE program, it is recommended to exclude Explorer.exe (Resource Manager process).
If you don't use Windows Defender antivirus software, just end it up. Shortcut keys win+x– Control Panel-Windows defender– Settings – Enforce protection-remove tick and admin – Enable Windows Defender-Remove tick.
The above tests are valid in Windows 8/8.1! by phyking
Windows Explorer open folder causes and solutions