Why are you using two Elgato video capture sources in the same scene? Remove one.
03:11:10.884: [DShow Device: 'Video Capture Device'] settings updated:
03:11:10.884: video device: Elgato Game Capture HD
03:11:10.884: video path: __elgato
03:11:10.884: resolution: 640x480
03:11:10.884: fps: 30.00 (interval: 333333)
03:11:10.884: format: UYVY
03:11:10.884: using video device audio: yes
03:11:10.884: sample rate: 48000
03:11:10.884: channels: 2
03:11:10.884: audio type: Capture
03:11:12.862: User switched to scene '16x9'
03:11:13.216: adding 23 milliseconds of audio buffering, total audio buffering is now 23 milliseconds
03:11:13.233: ---------------------------------
03:11:13.233: [DShow Device: 'Video Capture Device 2'] settings updated:
03:11:13.233: video device: Elgato Game Capture HD
03:11:13.233: video path: __elgato
03:11:13.233: resolution: 640x480
03:11:13.233: fps: 30.00 (interval: 333333)
03:11:13.233: format: UYVY
03:11:13.233: using video device audio: yes
03:11:13.233: sample rate: 48000
03:11:13.233: channels: 2
03:11:13.233: audio type: Capture