Reset package like new

Hello, i have many package atom and its causes atom so slow ( it takes 180 sec to opened it by timecop ). So i want to reset the package that only package by atom is active, but not remove third party package.

I can do this manually by deactive third part package, but idk which package is third party or not. Thanks anyway You can check the README to see the Atom Core Packages.
Another way of doing it is to delete D:\Users\your-user.atom\packages contents, but that will remove any installed package that is not ATOM core package.

thx i already did it by disable all package which not core package