20:08:39.356: [x264 encoder: 'recording_h264'] preset: superfast
20:08:39.382: [x264 encoder: 'recording_h264'] settings:
20:08:39.382: rate_control: CBR
20:08:39.382: bitrate: 40000
The superfast preset is for minimal system load and sacrifices quality to get it. The recommended default is veryfast.
Also, for local recording, use CRF instead of CBR, which is primarily for streaming.
Or run the Auto-Configuration Wizard from the Tools menu.
Or choose Simple output mode, indistinguishable quality, large file size.
20:08:47.827: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 29 (5.8%)
Also you are overloading your GPU.
OBS Studio - Free and open source software for live streaming and screen recording - obsproject/obs-studio
obsproject.com