bazeroni :
I upload my 21:9, 1920x810 video on YouTube and bam gives me 1080p60 but it looks like crap. DELETE. Upload again...same specs...gives me highest quality of 720p60...wtf?! DELETE. Upload AGAIN. Gives me 360P LIKE WHAT?! Help!
YouTube will always re-encode the video when you upload it so quality degradation is expected. However this can be minimised with an effective workflow.
How are you rendering the videos before you upload them to YouTube?