Yes seen the tweets now, the issues solved are easily worth that trade off, who on earth wants to play a platformer at 200fps anyway, there is no benefit to it. I am going to notice stutters, half loaded textures more than a drop from 200 to 160fps.This just one game though, if this becomes trend and DS noticeable reduces performance then eventually many more games will be affected
Not sure about stuttering but the guy said texture pop in and stuff like that is more noticeable, so it's possible that some of the framerate gain from having DS off is that the GPU is rendering lower quality graphics because the game can't load the higher quality graphics
So I would not reccomend playing the game with DS off, other than for testing purposes