Use speedtest.net to get a good idea of how much bandwidth you have available for uploading, then try watching your own stream and adjusting the bitrate and buffer if you're getting any buffering instead of a smooth stream. If the bitrate is too little to deal with the resolution, you'll start to see compression artifacts (fuzziness and strange colors). At that point you can either deal with it if you can't increase the bitrate, or you can downsample the resolution (but that will make the output smaller and harder to see detail)
Use speedtest.net to get a good idea of how much bandwidth you have available for uploading, then try watching your own stream and adjusting the bitrate and buffer if you're getting any buffering instead of a smooth stream. If the bitrate is too little to deal with the resolution, you'll start to see compression artifacts (fuzziness and strange colors). At that point you can either deal with it if you can't increase the bitrate, or you can downsample the resolution (but that will make the output smaller and harder to see detail)