I like watching 1080p60 game content when it’s available on YouTube, but I think this is usually achieved by uploading a high bitrate capture afterwards, not live-captured and transcoded. That said, for me 1080p60 even when livestreaming under dubious conditions still seems to work.
My current rig is an i7-2600K with an R9-290, and the upstream bitrate is limited to about 3500kbps (ugh), so I tend to stream at 720p60 (downsampled from 1080p). 3500kbps isn’t technically enough for it, but on YouTube it seems to work well enough.
It seems to work even for 1080p60, though individual frames can get pretty blotchy. If I want to showcase something pretty in a game, I’ll just stop moving the camera and let the frame build progressively to a higher-quality image over the 5-10 frame of data it needs.
Here’s a Wildlands 1080p60 stream test
on the setup I described above. I was surprised it worked at all. Streamed via the “AMD Relive” tool when it was still working for me. OOPS This was an uploaded high bitrate recording. This Division 720p60 was streamed (though my video card was overheating, causing hitching)
UPDATE: The file I was looking at before for Wildlands wasn’t livestreamed. Duh. I TAKE IT ALL BACK.