Hi,
you have the following errors in the log
02:30:58.676: Output 'simple_stream': Number of skipped frames due to encoding lag: 7336 (27.7%)
02:30:58.676: Output 'simple_stream': Number of lagged frames due to rendering lag/stalls: 70 (0.3%)
02:30:58.676: Output 'simple_stream': Number of dropped frames due to insufficient bandwidth/connection stalls: 529 (2.0%)
these are related to two things, the first two are related to encoding / rendering lag which are usually cpu related so try dropping the cpu preset from veryfast to superfast.
also in your video settings (see below) your outputting to 852x480 change this back to 720p or 1080p depending what output you want, if its just for the steam then 720p.
02:13:14.232: video settings reset:
02:13:14.232: base resolution: 1920x1080
02:13:14.232: output resolution: 852x480
02:13:14.232: downscale filter: Lanczos
02:13:14.232: fps: 30/1
02:13:14.232: format: NV12
the third log issue is related to bandwidth so run the twitch bandwidth tool using 64k tcp, 30s duration and look for a ingress twitch server with a quality of 80+ or check to ensure the one you are steaming to has this. Also ensure that your internet upload has 2.4mb minimium