Youtube Video fullscreen low quality

Hi so in the Upfront editor theres that option to do a fullscreen video by putting in the url. Well no matter what I do the player will only play the video in really low quality, so much so I cant use it without completely compromising the work.

The video itself is high res, it plays high res on youtube, and when embedded anywhere other then the upfront full screen video player it plays in the same high res.

Theres a bunch of youtube suggest codes to apply at the end of your URL to force the player to start in a higher quality but for some reason if any of them are added to the end of the url in the full screen player the video wont show up it all. Again this is only a upfront issue, I have no problems on any other platform.

Thanks!