Windows 8 open folder on the cause of suspended animation

I have been using Windows 8 for more than a year now, but there are always some uncomfortable places. I didn’t pay much attention to the number of errors I encountered before. Now I found a problem, that is, Windows 8 is open. After some folders, the system is similar to a sudden and suspended state. After a while, it will return to normal. What is it because of this?
First of all, the author encountered this problem, the effect of opening various folders on weekdays is basically no. The image preview and video preview are always on, but the progress of the loading (green progress bar) is displayed, so there is no global stuck effect, but there are some folders that make the author open when it is a headache. After many special observations, I found this problem when opening the directory where the installer is located. Due to personal habits, I usually save the downloaded software installation program, and these programs are not classified in detail, but directly placed in the same directory. At present, there are more than 400 files, some of which are compressed packages, and more than half of them are exe executables. Is it a problem here? Previously, when I opened this folder, there was no response to any button, and it was once collapsed twice because of this drive. The task manager can only jump out after it returns to normal, so this time open it in advance to see who is out of order.

Open the folder full of programs, and scroll to a place. After stopping, the system will be abnormally stuck. The highest ranked one is a program called MsMpEng, and the program inside the folder is only Some of the icons are displayed, and the rest are white icons. After the currently displayed program icons are displayed, the system returns to normal and the program is restored to a low occupancy rate.

Right click on it to open its file location in the %PROGRAMFILES%/Windows Defender folder. It can be seen that the file is a file of Windows Defender, and the corresponding service is WinDefend service. At this point, you can probably guess the cause of the suspended animation: open the folder full of applications, according to the default rules, the executable is the primary check object containing threats such as viruses, although the program is not open, but the program icon is to be accessed The program body, so also check; and too many files, only one queue check, pass (release the icon). It takes time to check itself, plus the need to check for so many programs at the same time, so the system is stuck.