are you sure? cause I'm new to the Macbook pro I wouldnt know exactly how to do that and do you think I'd be wasting my time going into an apple store and telling them the issue ?
It works for me and others around here. It's very doubtful that a hardware glitch could exist in a GPU in 2016-2017 because the testing procedures use by Nvidia and AMD are so much more advanced than just a few years ago. They don't just put the chips through hardware tests, they also simulate their chips in software to test for errors.
Drivers are another matter. When you have an Intel GPU driver and an AMD GPU driver switching back and forth then it requires more testing. They have different architectures so they approach colour profiles and Quartz rendering differently. Unfortunately the Polaris graphics chip was only available very deep into the development of Sierra so it's no surprise that the drivers still need work.
I personally think it's a mistake for Apple to release a new OS every year. Of course bugs will appear at the beginning of every release. A new OS every three years and people wouldn't notice the bugs so much. They should also have a permanent beta program like Microsoft uses.