Moderator Notice
This is not a help withdevelopment question. Please read the stickies at the top of each forum before ever posting. Moved.
I agree with the others. It is your computer (as configured).
Are you trying to keep your library on a USB stick/SDcard? Those are slow write devices compared to even a (s)low end HD
Exclude your library folder from ACTIVE malware/AV scans (it was probably scanned wherever it IS before the add)