Rime is not playable

I bought this game for my wife (I am a linux user and that game is not supported on that plateform and forget wine it doesn't even start). This game is not playable with a i7, 16GB ram and intel GPU. When I am saying not playable is with every settings at the lowest level possible and still the game was stuttering as hell and it was impossible to jump and in the first minutes of the game. I contacted directly the developer of the game which told me that there are updates (2) which could, eventually, solved my problem but they are not available on GOG and they didn't decide when it will be on GOG (translation: it will never be available). In my point of view, patch for a game should be available directly on the website of the game website not retain by the developers and provided to some players and not the others. GOG is not blame here, but Greybox! Extremely disapointed.