We'd need to see a logfile from a session where the issue occurred to be able to tell.
Here is a logfile from a session where this issue occurred.
15:44:59.891: CPU Name: AMD A9-9425 RADEON R5, 5 COMPUTE CORES 2C+3G
15:44:59.892: CPU Speed: 3094MHz
15:44:59.892: Physical Cores: 2, Logical Cores: 2
15:44:59.892: Physical Memory: 7638MB Total, 4609MB Free
15:44:59.892: Windows Version: 10.0 Build 18362 (release: 1903; revision: 1082; 64-bit)
15:44:59.892: Running as administrator: true
15:44:59.892: Aero is Enabled (Aero is always on for windows 8 and above)
15:44:59.892: Windows 10 Gaming Features:
15:44:59.893: Game DVR: On
15:44:59.898: Sec. Software Status:
15:44:59.900: Windows Defender Antivirus: enabled (AV)
15:44:59.903: McAfee VirusScan: disabled (AV)
15:44:59.903: McAfee Firewall: disabled (FW)
15:44:59.903: Windows Firewall: enabled (FW)
15:44:59.904: Current Date/Time: 2020-10-03, 15:44:59
15:44:59.904: Browser Hardware Acceleration: true
15:44:59.904: Portable mode: false
15:45:00.713: OBS 26.0.0 (64-bit, windows)
15:45:00.713: ---------------------------------
15:45:00.715: ---------------------------------
15:45:00.715: audio settings reset:
15:45:00.715: samples per sec: 48000
15:45:00.715: speakers: 2
15:45:00.719: ---------------------------------
15:45:00.719: Initializing D3D11...
15:45:00.719: Available Video Adapters:
15:45:00.726: Adapter 0: AMD Radeon(TM) R5 Graphics
15:45:00.726: Dedicated VRAM: 529018880
15:45:00.726: Shared VRAM: 4004704256
15:45:00.726: PCI ID: 1002:98e4
15:45:00.727: Driver Version: 23.20.787.2304
15:45:00.728: output 0: pos={0, 0}, size={1920, 1080}, attached=true, refresh=60, name=Inspiron 3475
15:45:00.732: Loading up D3D11 on adapter AMD Radeon(TM) R5 Graphics (0)
15:45:00.765: D3D11 loaded successfully, feature level used: b000
15:45:00.765: DXGI increase maximum frame latency success
15:45:00.765: D3D11 GPU priority setup success
15:45:01.521: ---------------------------------
15:45:01.521: video settings reset:
15:45:01.521: base resolution: 1280x720
15:45:01.521: output resolution: 960x540
15:45:01.521: downscale filter: Bilinear
15:45:01.521: fps: 30/1
15:45:01.521: format: NV12
15:45:01.521: YUV mode: 709/Partial
15:45:01.522: NV12 texture support enabled
15:45:01.524: Audio monitoring device:
15:45:01.524: name: Default
15:45:01.524: id: default
15:45:01.524: ---------------------------------
15:45:01.535: [CoreAudio encoder]: CoreAudio AAC encoder not installed on the system or couldn't be loaded
15:45:01.538: Failed to load 'en-US' text for module: 'decklink-ouput-ui.dll'
15:45:01.618: [AMF] The detected AMF runtime is too old, please update your drivers.
15:45:01.618: [AMF] AMF Runtime is outdated.
15:45:01.674: [AMF] AMF Test failed due to one or more errors.
15:45:01.674: Failed to initialize module 'enc-amf.dll'
15:45:01.725: [obs-browser]: Version 2.8.7
15:45:02.084: Couldn't find VLC installation, VLC video source disabled
15:45:02.111: A DeckLink iterator could not be created. The DeckLink drivers may not be installed
15:45:02.113: No blackmagic support
15:45:02.124: ---------------------------------
15:45:02.124: Loaded Modules:
15:45:02.124: win-wasapi.dll
15:45:02.125: win-mf.dll
15:45:02.125: win-dshow.dll
15:45:02.125: win-decklink.dll
15:45:02.125: win-capture.dll
15:45:02.125: vlc-video.dll
15:45:02.125: text-freetype2.dll
15:45:02.125: rtmp-services.dll
15:45:02.125: obs-x264.dll
15:45:02.125: obs-vst.dll
15:45:02.125: obs-transitions.dll
15:45:02.125: obs-text.dll
15:45:02.125: obs-qsv11.dll
15:45:02.125: obs-outputs.dll
15:45:02.125: obs-filters.dll
15:45:02.125: obs-ffmpeg.dll
15:45:02.125: obs-browser.dll
15:45:02.125: image-source.dll
15:45:02.125: frontend-tools.dll
15:45:02.125: enc-amf.dll
15:45:02.125: decklink-ouput-ui.dll
15:45:02.125: coreaudio-encoder.dll
15:45:02.125: ---------------------------------
15:45:02.125: ==== Startup complete ===============================================
15:45:02.137: All scene data cleared
15:45:02.137: ------------------------------------------------
15:45:02.346: WASAPI: Device 'Microphone (LCS USB Audio)' [44100 Hz] initialized
15:45:02.346: [Loaded global audio device]: 'Mic/Aux'
15:45:02.392: adding 42 milliseconds of audio buffering, total audio buffering is now 42 milliseconds (source: Mic/Aux)
15:45:02.392:
15:45:02.896: [duplicator-monitor-capture: 'Display Capture'] update settings:
15:45:02.896: display: 1 (1920x1080)
15:45:02.896: cursor: true
15:45:02.898: [window-capture: 'Timer'] update settings:
15:45:02.898: executable: LiveSplit.exe
15:45:02.898: method selected: Automatic
15:45:02.898: method chosen: BitBlt
15:45:02.898:
15:45:02.899: Switched to scene 'Scene'
15:45:02.899: ------------------------------------------------
15:45:02.899: Loaded scenes:
15:45:02.899: - scene 'Scene':
15:45:02.899: - source: 'Display Capture' (monitor_capture)
15:45:02.899: - source: 'Video Capture Device' (dshow_input)
15:45:02.899: - source: 'Elgato' (dshow_input)
15:45:02.899: - source: 'Timer' (window_capture)
15:45:02.899: - source: 'Mic/Aux' (wasapi_input_capture)
15:45:02.899: - source: 'Game Capture' (game_capture)
15:45:02.899: ------------------------------------------------
15:45:10.514: Video Capture Device: data.GetDevice failed
15:45:10.514: Video Capture Device: Video configuration failed
15:45:10.532: ---------------------------------
15:45:10.532: [DShow Device: 'Elgato'] settings updated:
15:45:10.532: video device: Game Capture HD60 S (Video) (#01)
15:45:10.532: video path: \\?\usb#vid_0fd9&pid_0074#0617826e06#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{6f814be9-9af6-43cf-9249-c0340100021f}
15:45:10.532: resolution: 1920x1080
15:45:10.532: flip: 0
15:45:10.532: fps: 29.97 (interval: 333667)
15:45:10.532: format: YV12
15:45:10.556: using video device audio: no
15:45:10.556: separate audio filter
15:45:10.556: sample rate: 48000
15:45:10.556: channels: 2
15:45:10.556: audio type: Capture
15:45:11.308: adding 85 milliseconds of audio buffering, total audio buffering is now 128 milliseconds (source: Elgato)
15:45:11.308:
15:45:14.463: adding 85 milliseconds of audio buffering, total audio buffering is now 213 milliseconds (source: Elgato)
15:45:14.463:
15:45:16.736: adding 192 milliseconds of audio buffering, total audio buffering is now 405 milliseconds (source: Elgato)
15:45:16.736:
15:54:10.700: ---------------------------------
15:54:10.700: [x264 encoder: 'simple_h264_stream'] preset: ultrafast
15:54:10.700: [x264 encoder: 'simple_h264_stream'] settings:
15:54:10.700: rate_control: CBR
15:54:10.700: bitrate: 2500
15:54:10.700: buffer size: 2500
15:54:10.700: crf: 0
15:54:10.700: fps_num: 30
15:54:10.700: fps_den: 1
15:54:10.700: width: 960
15:54:10.700: height: 540
15:54:10.700: keyint: 60
15:54:10.700:
15:54:10.700: [x264 encoder: 'simple_h264_stream'] custom settings:
15:54:10.700: scenecut = 0
15:54:10.710: ---------------------------------
15:54:10.712: [FFmpeg aac encoder: 'simple_aac'] bitrate: 160, channels: 2, channel_layout: 3
15:54:10.712:
15:54:10.734: ==== Recording Start ===============================================
15:54:10.735: [ffmpeg muxer: 'simple_file_output'] Writing file 'C:/Users/Daimyo/Documents/Diamyo/Lord Diamyo Vids/2020-10-03 15-54-10.mkv'...
15:58:15.296: [ffmpeg muxer: 'simple_file_output'] Output of file 'C:/Users/Daimyo/Documents/Diamyo/Lord Diamyo Vids/2020-10-03 15-54-10.mkv' stopped
15:58:15.296: Output 'simple_file_output': stopping
15:58:15.296: Output 'simple_file_output': Total frames output: 7193
15:58:15.296: Output 'simple_file_output': Total drawn frames: 6985 (7337 attempted)
15:58:15.296: Output 'simple_file_output': Number of lagged frames due to rendering lag/stalls: 352 (4.8%)
15:58:15.296: ==== Recording Stop ================================================
15:58:15.297: Video stopped, number of skipped frames due to encoding lag: 416/7336 (5.7%)
15:58:15.312: warning: 2 frames left in the queue on closing