EVERY time im launching GOG, or exit from Cyberpunk 2077 game - Galaxy trying to download 20 gb update... All autoupdates and features are disabled in galaxy. Im installed Cyberpunk from standalone installer. Very annoying especially on SSD every time to catch and stop update process. I use GOG galaxy only for multiplayer and to store standalone installers... Please help.

In Galaxy, click the button to the right of "play". A drop-down menu will appear. Mouse over to "manage installation" and another menu will appear to the side. Click "configure". In the "installation" tab, there are going to be three options. The last/third option is what we need. Click the check mark beside "automatically update to newest version", then at the bottom click "ok".

Im tryed it first, then switched autoupdates for ALL games in galaxy settings OFF. Doesnt help me. Cyberpunk trying to update every galaxy launch or every time im exit from Cyberpunk 2077. (Attached screenshot with settings you mention but thanks for answer =))