Cannot Export 2.7K on Final Cut Pro X 10.5
I am trying to export a 15min video for youtube on fcpx
My project has a custom resolution of 2704x1520 30p.
The highest resolution on export (I tried choosing master file and Youtube & Facebook) is 1920x1079.
I saw this post: 10.4.9. no 2,7K export option. - Apple Community but it doesn't give me the option to export.
Here is a screenshot: (on the right top corner you can see project settings).