Update...
Ok I managed to get this now. I don't know why it suddenly wanted to stream at 19000 again, but it did. I then stopped the stream to see if I could go above 20000 and it stopped. Restarting at 19000 seems to run ok, past 40 secs atm
15:54:27.366: CPU Name: Intel(R) Core(TM) i7-14700K
15:54:27.366: CPU Speed: 3417MHz
15:54:27.366: Physical Cores: 20, Logical Cores: 28
15:54:27.366: Physical Memory: 65277MB Total, 57825MB Free
15:54:27.366: Windows Version: 10.0 Build 22631 (release: 23H2; revision: 3296; 64-bit)
15:54:27.366: Running as administrator: true
15:54:27.366: Windows 10/11 Gaming Features:
15:54:27.366: Game Bar: Off
15:54:27.366: Game DVR: Off
15:54:27.366: Game DVR Background Recording: Off
15:54:27.366: Game Mode: On
15:54:27.367: Sec. Software Status:
15:54:27.368: Panda Dome: enabled (AV)
15:54:27.368: Microsoft Defender Antivirus: disabled (AV)
15:54:27.368: Windows Firewall: enabled (FW)
15:54:27.369: Current Date/Time: 2024-03-26, 15:54:27
15:54:27.369: Browser Hardware Acceleration: true
15:54:27.369: Hide OBS windows from screen capture: false
15:54:27.369: Qt Version: 6.6.2 (runtime), 6.6.2 (compiled)
15:54:27.369: Portable mode: false
15:54:27.656: OBS 30.1.1 (64-bit, windows)
15:54:27.656: ---------------------------------
15:54:27.656: ---------------------------------
15:54:27.656: audio settings reset:
15:54:27.656: samples per sec: 48000
15:54:27.656: speakers: 2
15:54:27.656: max buffering: 960 milliseconds
15:54:27.656: buffering type: dynamically increasing
15:54:27.658: ---------------------------------
15:54:27.658: Initializing D3D11...
15:54:27.658: Available Video Adapters:
15:54:27.665: Adapter 0: NVIDIA GeForce RTX 4080
15:54:27.666: Dedicated VRAM: 16829644800 (15.7 GiB)
15:54:27.666: Shared VRAM: 34223998976 (31.9 GiB)
15:54:27.666: PCI ID: 10de:2704
15:54:27.666: HAGS Status: Disabled (Default: No, Driver status: Supported)
15:54:27.666: Driver Version: 31.0.15.5186
15:54:27.666: output 0:
15:54:27.666: name=VG27A
15:54:27.666: pos={0, 0}
15:54:27.666: size={2560, 1440}
15:54:27.666: attached=true
15:54:27.666: refresh=165
15:54:27.666: bits_per_color=8
15:54:27.666: space=RGB_FULL_G2084_NONE_P2020
15:54:27.666: primaries=[r=(0.658203, 0.333008), g=(0.299805, 0.626953), b=(0.148438, 0.056641), wp=(0.312500, 0.328125)]
15:54:27.666: relative_gamut_area=[709=1.110633, P3=0.818726, 2020=0.587381]
15:54:27.666: sdr_white_nits=348
15:54:27.666: nit_range=[min=0.000000, max=603.698425, max_full_frame=603.698425]
15:54:27.666: dpi=96 (100%)
15:54:27.666: id=\\?\DISPLAY#AUS2722#5&2b671f06&2&UID4353#{e6f07b5f-ee97-4a90-b076-33f57bf4eaa7}
15:54:27.666: alt_id=\\.\DISPLAY6
15:54:27.666: Loading up D3D11 on adapter NVIDIA GeForce RTX 4080 (0)
15:54:27.720: D3D11 loaded successfully, feature level used: b000
15:54:27.720: DXGI increase maximum frame latency success
15:54:27.720: D3D11 GPU priority setup success
15:54:27.858: ---------------------------------
15:54:27.858: video settings reset:
15:54:27.858: base resolution: 2560x1440
15:54:27.858: output resolution: 2560x1440
15:54:27.858: downscale filter: Bicubic
15:54:27.858: fps: 60/1
15:54:27.858: format: P010
15:54:27.858: YUV mode: Rec. 2100 (PQ)/Partial
15:54:27.858: NV12 texture support not available
15:54:27.858: P010 texture support enabled
15:54:27.860: Audio monitoring device:
15:54:27.860: name: Default
15:54:27.860: id: default
15:54:27.860: ---------------------------------
15:54:27.862: No AJA devices found, skipping loading AJA UI plugin
15:54:27.862: Failed to initialize module 'aja-output-ui.dll'
15:54:27.862: No AJA devices found, skipping loading AJA plugin
15:54:27.862: Failed to initialize module 'aja.dll'
15:54:27.862: Skipping module '../../obs-plugins/64bit/chrome_elf.dll', not an OBS plugin
15:54:27.864: [CoreAudio encoder]: CoreAudio AAC encoder not installed on the system or couldn't be loaded
15:54:27.864: Failed to load 'en-US' text for module: 'decklink-captions.dll'
15:54:27.864: Failed to load 'en-US' text for module: 'decklink-output-ui.dll'
15:54:27.866: A DeckLink iterator could not be created. The DeckLink drivers may not be installed
15:54:27.866: Failed to initialize module 'decklink.dll'
15:54:27.878: Skipping module '../../obs-plugins/64bit/libcef.dll', not an OBS plugin
15:54:27.878: Skipping module '../../obs-plugins/64bit/libEGL.dll', not an OBS plugin
15:54:27.879: Skipping module '../../obs-plugins/64bit/libGLESv2.dll', not an OBS plugin
15:54:27.887: [obs-browser]: Version 2.23.4
15:54:27.887: [obs-browser]: CEF Version 103.0.5060.134 (runtime), 103.0.0-5060-shared-textures.2594+gc69ad37+chromium-103.0.5060.134 (compiled)
15:54:27.890: NVENC supported
15:54:27.999: [noise suppress]: NVIDIA denoiser disabled, redistributable not found or could not be loaded.
15:54:27.999: Failed to get NVVideoEffects.dll version info size
15:54:28.000: [NVIDIA VIDEO FX]: FX disabled, redistributable not found or could not be loaded.
15:54:28.035: [obs-websocket] [obs_module_load] you can haz websockets (Version: 5.4.2 | RPC Version: 1)
15:54:28.035: [obs-websocket] [obs_module_load] Qt version (compile-time): 6.6.2 | Qt version (run-time): 6.6.2
15:54:28.035: [obs-websocket] [obs_module_load] Linked ASIO Version: 102900
15:54:28.048: [obs-websocket] [obs_module_load] Module loaded.
15:54:28.054: [vlc-video]: VLC 3.0.20 Vetinari found, VLC video source enabled
15:54:28.060: ---------------------------------
15:54:28.060: Loaded Modules:
15:54:28.060: win-wasapi.dll
15:54:28.060: win-dshow.dll
15:54:28.060: win-capture.dll
15:54:28.060: vlc-video.dll
15:54:28.060: text-freetype2.dll
15:54:28.060: rtmp-services.dll
15:54:28.060: obs-x264.dll
15:54:28.060: obs-websocket.dll
15:54:28.060: obs-webrtc.dll
15:54:28.060: obs-vst.dll
15:54:28.060: obs-transitions.dll
15:54:28.060: obs-text.dll
15:54:28.060: obs-qsv11.dll
15:54:28.061: obs-outputs.dll
15:54:28.061: obs-filters.dll
15:54:28.061: obs-ffmpeg.dll
15:54:28.061: obs-browser.dll
15:54:28.061: image-source.dll
15:54:28.061: frontend-tools.dll
15:54:28.061: decklink-output-ui.dll
15:54:28.061: decklink-captions.dll
15:54:28.061: coreaudio-encoder.dll
15:54:28.061: ---------------------------------
15:54:28.061: QWidget::setTabOrder: 'first' and 'second' must be in the same window
15:54:28.061: ==== Startup complete ===============================================
15:54:28.129: All scene data cleared
15:54:28.129: ------------------------------------------------
15:54:28.135: [win-wasapi: 'Desktop Audio'] update settings:
15:54:28.135: device id: {0.0.0.00000000}.{4af73557-860f-42a5-bbf3-8e5b416bda9f}
15:54:28.135: use device timing: 1
15:54:28.135: [Loaded global audio device]: 'Desktop Audio'
15:54:28.136: [win-wasapi: 'Mic/Aux'] update settings:
15:54:28.136: device id: {0.0.1.00000000}.{21085fd5-99f1-4100-b39c-211c5c76cc25}
15:54:28.136: use device timing: 0
15:54:28.136: [Loaded global audio device]: 'Mic/Aux'
15:54:28.266: WASAPI: Device 'Microphone (2- Arctis Pro Wireless)' [48000 Hz] initialized (source: Mic/Aux)
15:54:28.319: adding 42 milliseconds of audio buffering, total audio buffering is now 42 milliseconds (source: Mic/Aux)
15:54:28.319:
15:54:28.531: WASAPI: Device 'Speakers (Realtek(R) Audio)' [48000 Hz] initialized (source: Desktop Audio)
15:54:29.324: Switched to scene 'Scene'
15:54:29.324: ------------------------------------------------
15:54:29.324: Loaded scenes:
15:54:29.324: - scene 'Scene':
15:54:29.324: - source: 'Game Capture' (game_capture)
15:54:29.324: ------------------------------------------------
15:54:29.424: YT: InitYTUserUrl() User is not signed
15:54:29.424: YT: InitYTUserUrl() User is not signed
15:54:36.834: OpenType support missing for "Open Sans", script 11
15:54:36.835: OpenType support missing for "Arial", script 11
15:54:36.835: OpenType support missing for "Tahoma", script 11
15:54:36.836: OpenType support missing for "MS UI Gothic", script 11
15:54:36.837: OpenType support missing for "SimSun", script 11
15:54:36.838: OpenType support missing for "Segoe UI Emoji", script 11
15:54:36.838: OpenType support missing for "Segoe UI Symbol", script 11
15:54:36.840: OpenType support missing for "Open Sans", script 12
15:54:36.840: OpenType support missing for "Arial", script 12
15:54:36.840: OpenType support missing for "Tahoma", script 12
15:54:36.841: OpenType support missing for "MS UI Gothic", script 12
15:54:36.841: OpenType support missing for "SimSun", script 12
15:54:36.841: OpenType support missing for "Segoe UI Emoji", script 12
15:54:36.841: OpenType support missing for "Segoe UI Symbol", script 12
15:54:36.842: OpenType support missing for "Open Sans", script 16
15:54:36.842: OpenType support missing for "Arial", script 16
15:54:36.843: OpenType support missing for "Tahoma", script 16
15:54:36.843: OpenType support missing for "MS UI Gothic", script 16
15:54:36.843: OpenType support missing for "SimSun", script 16
15:54:36.843: OpenType support missing for "Segoe UI Emoji", script 16
15:54:36.844: OpenType support missing for "Segoe UI Symbol", script 16
15:54:36.844: OpenType support missing for "Open Sans", script 20
15:54:36.844: OpenType support missing for "Arial", script 20
15:54:36.845: OpenType support missing for "Tahoma", script 20
15:54:36.845: OpenType support missing for "MS UI Gothic", script 20
15:54:36.845: OpenType support missing for "SimSun", script 20
15:54:36.846: OpenType support missing for "Segoe UI Emoji", script 20
15:54:36.846: OpenType support missing for "Segoe UI Symbol", script 20
15:54:47.602: Settings changed (outputs)
15:54:47.602: ------------------------------------------------
15:55:01.072: [obs-nvenc: 'advanced_video_stream'] settings:
15:55:01.072: codec: HEVC
15:55:01.072: rate_control: CBR
15:55:01.072: bitrate: 19000
15:55:01.072: cqp: 20
15:55:01.072: keyint: 120
15:55:01.072: preset: p6
15:55:01.072: tuning: hq
15:55:01.072: multipass: qres
15:55:01.072: profile: main10
15:55:01.072: width: 2560
15:55:01.072: height: 1440
15:55:01.072: b-frames: 2
15:55:01.072: lookahead: false
15:55:01.072: psycho_aq: true
15:55:01.072:
15:55:01.117: ---------------------------------
15:55:01.117: [FFmpeg aac encoder: 'adv_stream_audio'] bitrate: 160, channels: 2, channel_layout: stereo
15:55:01.117:
15:55:01.117: [ffmpeg muxer: 'adv_stream'] Using muxer settings:
15:55:01.117: method=PUT
15:55:01.117: http_persistent=1
15:55:01.117: ignore_io_errors=1
15:55:01.117: http_user_agent=libobs/30.1.1
15:55:01.117: hls_time=2
15:55:01.142: ==== Streaming Start ===============================================
15:55:01.142: [ffmpeg hls muxer: 'adv_stream'] Writing to path '
https://a.upload.youtube.com/http_upload_hls?cid={stream_key}©=0&file=out.m3u8'...
15:58:13.392: [ffmpeg muxer: 'adv_stream'] Output of file '
https://a.upload.youtube.com/http_upload_hls?cid={stream_key}©=0&file=out.m3u8' stopped
15:58:13.392: Output 'adv_stream': stopping
15:58:13.392: Output 'adv_stream': Total frames output: 11426
15:58:13.392: Output 'adv_stream': Total drawn frames: 11535
15:58:13.396: ==== Streaming Stop ================================================
15:58:27.294: Settings changed (outputs)
15:58:27.294: ------------------------------------------------
15:58:34.189: [obs-nvenc: 'advanced_video_stream'] settings:
15:58:34.189: codec: HEVC
15:58:34.189: rate_control: CBR
15:58:34.189: bitrate: 21000
15:58:34.189: cqp: 20
15:58:34.189: keyint: 120
15:58:34.189: preset: p6
15:58:34.189: tuning: hq
15:58:34.189: multipass: qres
15:58:34.189: profile: main10
15:58:34.189: width: 2560
15:58:34.189: height: 1440
15:58:34.189: b-frames: 2
15:58:34.189: lookahead: false
15:58:34.189: psycho_aq: true
15:58:34.189:
15:58:34.229: ---------------------------------
15:58:34.229: [FFmpeg aac encoder: 'adv_stream_audio'] bitrate: 160, channels: 2, channel_layout: stereo
15:58:34.229:
15:58:34.229: [ffmpeg muxer: 'adv_stream'] Using muxer settings:
15:58:34.229: method=PUT
15:58:34.229: http_persistent=1
15:58:34.229: ignore_io_errors=1
15:58:34.229: http_user_agent=libobs/30.1.1
15:58:34.229: hls_time=2
15:58:34.242: ==== Streaming Start ===============================================
15:58:34.242: [ffmpeg hls muxer: 'adv_stream'] Writing to path '
https://a.upload.youtube.com/http_upload_hls?cid={stream_key}©=0&file=out.m3u8'...
16:01:09.021: [ffmpeg muxer: 'adv_stream'] Output of file '
https://a.upload.youtube.com/http_upload_hls?cid={stream_key}©=0&file=out.m3u8' stopped
16:01:09.021: Output 'adv_stream': stopping
16:01:09.021: Output 'adv_stream': Total frames output: 8474 (9186 attempted)
16:01:09.021: Output 'adv_stream': Total drawn frames: 9287
16:01:09.021: Output 'adv_stream': Number of dropped frames due to insufficient bandwidth/connection stalls: 712 (7.8%)
16:01:09.024: ==== Streaming Stop ================================================