I have this exact problem, but mine is on a late 2014 mbpr. It's a shame... it's still a fantastic machine, and until there's a new MBP worth buying, I guess I

I have this exact problem, but mine is on a late 2014 mbpr. It's a shame... it's still a fantastic machine, and until there's a new MBP worth buying, I guess I'll spend the $$ to fix it.