I've noticed colour banding and crushed colours, especially when watching YouTube video's (2k and 4k). I read that Microsoft install custom graphic drivers to conserve battery, but there is a way of installing intels drivers for better performance. Can anyone tell me how to do this. I used intels update utility app but it wouldn't let me download them. Thanks. Update: managed to solve the problem by manually updating the drivers from Intel website. I now have a graphics control panel where I can adjust settings. No more banding/crushed colours in videos. So much better. I will most probably lose battery life, but I think the sacrifice is worth it. Sorry if this has all been covered in previous posts.