PaladinNO: The 200 MB limit is only for the GoG Cloud save game data.
Play the game offline, disable all the cloud sync nonsense, and all is well.
You know... the irony of it all is: GOG is owned by CDPR. CDPR made thie game. They can decide themselves to give an excemption to their big complex games which also have some of the biggest savegames of the whole industry (per save) but they won't do it here, where they get the full cut of all purchases of their games.
On the other hand... AND HERE IT COMES I've talked with someone who owns the game on Steam (where they also can tell steam how much space they want them to reserve per customer) and io and behold... over there you get 1.95 GB to backup your save games in the cloud.
Funny isn't it? If you want to support them and buy it where they get all the money they screw you like they're Ebenezer Scrooge with shrinking down the backup space and someplace else where 30% or so of the purchase prize goes to another shop they actually treat you better.
They have all the power in the world to say "You bought our game right from us, thanks very much we'll give you a bit more space to backup your saves into because we appreciate it" but instead their management just can't stop shooting themselves into the foot again.
It's not that big of a deal, you can just keep them locally and when you plan to uninstall it again just clean out the unnecessary saves and sync them... but the idea that they won't even treat you on the same level as they treat people who bought it someplace else... that's real ****ed up.