Protip: Praise Israel and download Mr. Goldberg's RGSC emulator if you want to free your GTA from the clutches of Rockstar. No updates, no forced DRM bullshit and it makes your GTA 100% portable. It does break GTA:O though, but I don't give two shits about GTAO anyways because MAWDZ :^)
Or just use the Launcher Bypass if you want to play GTAO.
EDIT: It makes RGSC completely obsolete which means it makes your GTA V 100% portable, no registry keys 'n shit needed.