For both Cyberpunk and Divinity: Original Sin 2 the GOG launcher fails to sync saved games to the cloud every single time. This has been happening for months.

Is there some way to fix this? I've filed a ticket through GOG, but I never heard anything back.

Unlike multiplayer or achievements, this seems to me like a feature that could be tackled by any third-party tool, not just Galaxy, especially if you are willing to shutdown your game before you restore saves.

Honestly, I have some vague intentions of tackling this issue, but it will be at least a year, possibly 2 or even 3. Just getting the experience I want backing up my installers is keeping me busy right now.

I bet the telemetry is working OK.

I was able to fix a couple of mine that were doing that, by killing galaxy communication in task manager, while the game was open, and then closing the game. Some remained failed no matter what I tried.

Yes, this is a known issue (there's a thread about it in the Galaxy forum). It only seems to affect certain games, though, which is strange. It only happened to me after the recent experimental Proteus update. I encourage everyone who experiences it to file a bug report within Galaxy so there are a lot of details they can see. More reports usually = faster fix.