Terrible performance in safe mode

#1

Atom takes a lot of time to start even in safe mode.

atom_--safe_timecop2_018-01-17 14-26-20
atom_--safe_timecop2_018-01-17 14-26-20.png1454x775 53.1 KB 

~> atom --version
Atom    : 1.23.3
Electron: 1.6.15
Chrome  : 56.0.2924.87
Node    : 7.4.0

How can I speed up Atom?