Turn v-sync ON and post a log-file, please.
[09:07:39.486: CPU Name: Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz
09:07:39.486: CPU Speed: 3504MHz
09:07:39.486: Physical Cores: 4, Logical Cores: 4
09:07:39.486: Physical Memory: 16330MB Total, 12435MB Free
09:07:39.486: Windows Version: 10.0 Build 14393 (revision: 0)
09:07:39.486: Running as administrator: false
09:07:39.486: Aero is Enabled (Aero is always on for windows 8 and above)
09:07:39.499: OBS 0.15.4 (64bit, windows)
09:07:39.499: ---------------------------------
09:07:39.499: ---------------------------------
09:07:39.499: audio settings reset:
09:07:39.499: samples per sec: 44100
09:07:39.499: speakers: 2
09:07:39.540: ---------------------------------
09:07:39.540: Initializing D3D11..
09:07:39.540: Available Video Adapters:
09:07:39.541: Adapter 1: Radeon (TM) RX 480 Graphics
09:07:39.541: Dedicated VRAM: 4241149952
09:07:39.541: Shared VRAM: 4267128832
09:07:39.541: output 1: pos={0, 0}, size={1920, 1080}, attached=true
09:07:39.541: output 2: pos={-1920, 0}, size={1920, 1080}, attached=true
09:07:39.542: Loading up D3D11 on adapter Radeon (TM) RX 480 Graphics (0)
09:07:39.557: D3D11 loaded sucessfully, feature level used: 45056
09:07:40.012: ---------------------------------
09:07:40.012: video settings reset:
09:07:40.012: base resolution: 1920x1080
09:07:40.012: output resolution: 1920x1080
09:07:40.012: fps: 60/1
09:07:40.012: format: NV12
09:07:40.014: ---------------------------------
09:07:40.038: [CoreAudio encoder]: CoreAudio AAC encoder not installed on the system or couldn't be loaded
09:07:40.052: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libcef.dll' not found, loading of module failed
09:07:40.053: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libEGL.dll' not found, loading of module failed
09:07:40.053: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libGLESv2.dll' not found, loading of module failed
09:07:40.054: Failed to load 'en-US' text for module: 'obs-browser.dll'
09:07:40.058: LoadLibrary failed for 'nvEncodeAPI64.dll', error: 126
09:07:40.800: VLC found, VLC video source enabled
09:07:41.620: No blackmagic support
09:07:41.781: ---------------------------------
09:07:41.781: Loaded Modules:
09:07:41.781: win-wasapi.dll
09:07:41.781: win-mf.dll
09:07:41.781: win-dshow.dll
09:07:41.781: win-decklink.dll
09:07:41.781: win-capture.dll
09:07:41.781: vlc-video.dll
09:07:41.781: text-freetype2.dll
09:07:41.781: rtmp-services.dll
09:07:41.781: obs-x264.dll
09:07:41.781: obs-transitions.dll
09:07:41.781: obs-qsv11.dll
09:07:41.781: obs-outputs.dll
09:07:41.781: obs-filters.dll
09:07:41.781: obs-ffmpeg.dll
09:07:41.781: obs-browser.dll
09:07:41.781: image-source.dll
09:07:41.781: coreaudio-encoder.dll
09:07:41.781: ==== Startup complete ===============================================
09:07:42.018: All scene data cleared
09:07:42.018: ------------------------------------------------
09:07:42.067: WASAPI: Device 'Speakers (High Definition Audio Device)' initialized
09:07:42.077: WASAPI: Device 'Microphone (Blue Snowball)' initialized
09:07:42.259: Switched to scene 'Stream'
09:07:42.259: adding 92 milliseconds of audio buffering, total audio buffering is now 92 milliseconds
09:07:42.259: ------------------------------------------------
09:07:42.259: Loaded scenes:
09:07:42.259: - scene 'Stream':
09:07:42.259: - source: 'CSGO' (game_capture)
09:07:42.259: - source: 'Overwatch' (game_capture)
09:07:42.259: - source: 'HL2' (game_capture)
09:07:42.259: ------------------------------------------------
09:07:42.575: Update check: last known remote version is 0.15.4
09:09:15.324: Settings changed (outputs)
09:09:15.324: ------------------------------------------------
09:11:04.814: [game-capture: 'HL2'] attempting to hook process: hl2.exe
09:11:04.815: [game-capture: 'HL2'] using helper (direct hook)
09:11:08.831: [game-capture: 'HL2'] attempting to hook process: hl2.exe
09:11:08.892: [game-capture: 'HL2'] d3d9 shared texture capture successful
09:11:09.060: [game-capture: 'HL2'] Hooked DXGI
09:11:37.658: ---------------------------------
09:11:37.658: [x264 encoder: 'simple_h264_stream'] preset: veryfast
09:11:37.658: [x264 encoder: 'simple_h264_stream'] profile: main
09:11:37.672: [x264 encoder: 'simple_h264_stream'] settings:
09:11:37.672: rate_control: CBR
09:11:37.672: bitrate: 3500
09:11:37.672: buffer size: 3500
09:11:37.672: crf: 0
09:11:37.672: fps_num: 60
09:11:37.672: fps_den: 1
09:11:37.672: width: 1920
09:11:37.672: height: 1080
09:11:37.672: keyint: 120
09:11:37.672: vfr: off
09:11:37.672:
09:11:37.672: [x264 encoder: 'simple_h264_stream'] custom settings: scenecut=0
09:11:37.707: [Media Foundation AAC: 'simple_aac']: encoder created
09:11:37.707: bitrate: 160
09:11:37.707: channels: 2
09:11:37.707: sample rate: 44100
09:11:37.707: bits-per-sample: 16
09:11:37.707:
09:11:37.708: [rtmp stream: 'simple_stream'] Connecting to RTMP URL rtmp://live-ord.twitch.tv/app...
09:11:37.734: [rtmp stream: 'simple_stream'] Interface: Realtek PCIe GBE Family Controller (ethernet, 1000 mbps)
09:11:38.948: [rtmp stream: 'simple_stream'] Connection to rtmp://live-ord.twitch.tv/app successful
09:11:38.959: ==== Streaming Start ===============================================
09:13:05.764: [game-capture: 'HL2'] capture window no longer exists, terminating capture
09:13:08.867: [rtmp stream: 'simple_stream'] User stopped the stream
09:13:08.867: Output 'simple_stream': stopping
09:13:08.867: Output 'simple_stream': Total encoded frames: 5470
09:13:08.867: Output 'simple_stream': Total drawn frames: 5470
09:13:08.867: Output 'simple_stream': Number of lagged frames due to rendering lag/stalls: 6 (0.1%)
09:13:08.868: ==== Streaming Stop ================================================]
