No, there isn't an official 1.07 patch for Witcher 3 on GOG.
No, there isn't an official 1.07 patch for Witcher 3 on GOG.
It still felt smooth as before after the update (though I did write a short note about it). The patch notes mentioned improvements to damage calculations in certain areas, which might have made the challenge slightly tougher there. Not sure what you meant by "specific part."