Hi,
You're having issues with connectivity or bandwidth to the twitch ingress server
"Number of dropped frames due to insufficient bandwidth/connection stalls: 52802 (3.2%)"
I see your on Ethernet so try running the twitch bandwidth tool and ensure you are picking and ingress server with as close to 100 quality as possible no lower than 80, use 64 tcp and duration of 30secs.
few other bits change fps to 30 from 60 as your only using a bitrate of 2400 and 720p @ 60fps requires more. If you have the upload then increase this to between 3000 or 3500 if you want to run 720p 60fps.