I am pretty sure that's the wrong log file, I don't see anything recording in that one.
Here:
https://hastebin.com/pewodujila
edit: ran this test afterwards as well. Monitored CPU usage during recording session and it didn't go above 35%
17:20:10.399: ---------------------------------
17:20:10.399: video settings reset:
17:20:10.399: base resolution: 1920x1080
17:20:10.399: output resolution: 1280x720
17:20:10.399: downscale filter: Bilinear
17:20:10.399: fps: 60/1
17:20:10.399: format: NV12
17:20:10.399: YUV mode: 601/Partial
17:20:10.413: Settings changed (outputs, video)
17:20:10.414: ------------------------------------------------
17:20:50.669: ---------------------------------
17:20:50.669: video settings reset:
17:20:50.669: base resolution: 1920x1080
17:20:50.669: output resolution: 1280x720
17:20:50.669: downscale filter: Bilinear
17:20:50.669: fps: 60/1
17:20:50.669: format: NV12
17:20:50.669: YUV mode: 601/Partial
17:20:50.685: Settings changed (advanced)
17:20:50.685: ------------------------------------------------
17:23:21.655: [game-capture: 'Game Capture'] attempting to hook process: SHODN.exe
17:23:21.658: [game-capture: 'Game Capture'] using helper (compatibility hook)
17:23:21.659: [game-capture: 'Game Capture'] hook not loaded yet, retrying..
17:23:24.671: [game-capture: 'Game Capture'] attempting to hook process: SHODN.exe
17:23:24.690: [game-capture: 'Game Capture'] Hooked DXGI
17:23:24.734: [game-capture: 'Game Capture'] d3d9 shared texture capture successful
17:23:24.737: [game-capture: 'Game Capture'] shared texture capture successful
17:23:25.307: ---------------------------------
17:23:25.307: [x264 encoder: 'simple_h264_recording'] preset: ultrafast
17:23:25.307: [x264 encoder: 'simple_h264_recording'] profile: high
17:23:25.307: [x264 encoder: 'simple_h264_recording'] settings:
17:23:25.307: rate_control: CRF
17:23:25.307: bitrate: 0
17:23:25.307: buffer size: 0
17:23:25.307: crf: 12
17:23:25.307: fps_num: 60
17:23:25.307: fps_den: 1
17:23:25.307: width: 1280
17:23:25.307: height: 720
17:23:25.307: keyint: 250
17:23:25.307:
17:23:25.315: ---------------------------------
17:23:25.315: [FFmpeg aac encoder: 'simple_aac_recording'] bitrate: 128, channels: 2, channel_layout: 3
17:23:25.315:
17:23:25.322: ==== Recording Start ===============================================
17:23:25.322: [ffmpeg muxer: 'simple_file_output'] Writing file 'D:/Vids/OBS/2018-04-24 17-23-25.mp4'...
17:26:43.001: [ffmpeg muxer: 'simple_file_output'] Output of file 'D:/Vids/OBS/2018-04-24 17-23-25.mp4' stopped
17:26:43.001: Output 'simple_file_output': stopping
17:26:43.001: Output 'simple_file_output': Total frames output: 11832
17:26:43.001: Output 'simple_file_output': Total drawn frames: 9945 (11871 attempted)
17:26:43.001: Output 'simple_file_output': Number of lagged frames due to rendering lag/stalls: 1926 (16.2%)
17:26:43.002: Video stopped, number of skipped frames due to encoding lag: 22/11872 (0.2%)
17:26:43.002: ==== Recording Stop ================================================
17:26:43.012: warning: 2 frames left in the queue on closing
