Not sure if same applies to MK7.5 R, but some months ago on here there was a debate regarding headlight beam being too low. It was agreed that VW sourced headlights from 2 suppliers and one was noticeably better than the other. On my first 2014 R I took mine to dealer who told me that aim could only be altered via VCDS, it then later came to light that manual adjustment is possible, I followed the below thread and manually adjusted mine and it made a world of difference.
http://www.golfgtiforum.co.uk/index.php?topic=276375.msg2525727#msg2525727