Originally Posted by
Echelon
I'm not as familiar with the mac version, but I'm sure it's very similar to the PC version.
If you open settings, and go into Advanced, under the video section, there should be an option that says x264 CPU Preset. From the dropdown, select faster, and see if that makes a difference. Apologies in advance if the mac version doesn't have those options, my MacBook is at home and I won't be able to verify this until around 5 PM EST. I've streamed with OBS for about a year, and have had to work through a lot of issues with it. Once you figure it out though, it is incredible.
Others have said this already, but Game Capture is ALWAYS better than Window Capture as a video source.
What is your upload speed? I would say that you need a minimum of 5 mbps up to stream at 720 consistently.
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This. For the best possible streaming you need a second computer to handle all the heavy lifting. If you're streaming on the same computer you are playing you need to minimize the amount of CPU required by OBS. That means downscaling to 720p, probably 30 FPS and as he said set the x264 to fast or higher.