hm, I found this thread and I thought this should be an easy fix for my “quarter screen gui at 2160p resolution” problem. So I edited the “guisettings.xml” file, using winscp program on windows though, and deleted the < resolutions> part of the file (no space after “<”). Maybe I did something wrong or this solution doesn’t work for me, but the gui is still displayed in the first quarter of the screen on 2160p resolution. Also I think I may have lost the 2160p @ 60hz option in the system>display options, in the process…
If someone had and solved this issue, any help and suggestions are appreciated 
or I’ll just try to install NG