I've been struggling with this issue for a long time now. It happened after a fresh OS install of Windows 10. Basically, as an HTML5 video plays, the audio and the video gradually unsync. The video is also pretty choppy. This does not happen if I force the flash player to be used, so I'm positive at this point it is a software issue.
I tried turning on all the chrome://flags that deal with hardware video decode, as well as turning them all off with no luck. I thought maybe it was my 5.1 receiver and/or TV, but that can't be the case since the flash player works fine (as far as the video/audio not desyncing, but there's other issues with the flash player, like hidden ads playing when playing a YouTube video, but that might be because of the forced flash player hack).
I also tried Canary, but that has the same issue. Firefox and IE have the same issue as well, so maybe this is a webkit issue?
TV is running in 4K, and I've tried a bunch of different refresh rates. The refresh rate seems to change how long it takes to desync. I also have tried to change the audio quality, and when changing it while the video is playing, it resyncs correctly, but then desyncs eventually again.
I've tried to change the audio buffer, but it just causes Chrome to crash it seems, and it seems like that fix is outdated by a few years anyways.
It can't be my machine. It's honestly a beast, and I've posted the configs below. I've updated all the drivers to the ones provided by the manufacturer. Chrome version 58.0.3029.110; 64-bit of course.
------------------ System Information ------------------ Time of this report: 6/8/2017, 08:56:46 Machine name: GOGETA Machine Id: {C67E0F28-9FB7-4343-BC75-C72A20088EF5} Operating System: Windows 10 Pro 64-bit (10.0, Build 15063) (15063.rs2_release.170317-1834) Language: English (Regional Setting: English) System Manufacturer: MSI System Model: MS-7998 BIOS: BIOS Date: 01/21/16 13:54:42 Ver: V2.10 Processor: Intel(R) Xeon(R) CPU E3-1275 v5 @ 3.60GHz (8 CPUs), ~3.6GHz Memory: 65536MB RAM Available OS Memory: 65496MB RAM Page File: 9872MB used, 65351MB available Windows Dir: C:\WINDOWS DirectX Version: DirectX 12 DX Setup Parameters: Not found User DPI Setting: Using System DPI System DPI Setting: 288 DPI (300 percent) DWM DPI Scaling: UnKnown Miracast: Available, with HDCP Microsoft Graphics Hybrid: Not Supported DxDiag Version: 10.00.15063.0000 64bit Unicode ------------ DxDiag Notes ------------ Display Tab 1: No problems found. Sound Tab 1: No problems found. Input Tab: No problems found. -------------------- DirectX Debug Levels -------------------- Direct3D: 0/4 (retail) DirectDraw: 0/4 (retail) DirectInput: 0/5 (retail) DirectMusic: 0/5 (retail) DirectPlay: 0/9 (retail) DirectSound: 0/5 (retail) DirectShow: 0/6 (retail) --------------- Display Devices --------------- Card name: NVIDIA GeForce GTX 980 Ti Manufacturer: NVIDIA Chip type: GeForce GTX 980 Ti DAC type: Integrated RAMDAC Device Type: Full Device Device Key: Enum\PCI\VEN_10DE&DEV_17C8&SUBSYS_855B1043&REV_A1 Device Status: 0180200A [DN_DRIVER_LOADED|DN_STARTED|DN_DISABLEABLE|DN_NT_ENUMERATOR|DN_NT_DRIVER] Device Problem Code: No Problem Driver Problem Code: Unknown Display Memory: 38851 MB Dedicated Memory: 6103 MB Shared Memory: 32747 MB Current Mode: 1920 x 1200 (32 bit) (32Hz) Driver Name: C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_7209bde3180ef5f7\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_7209bde3180ef5f7\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_7209bde3180ef5f7\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_7209bde3180ef5f7\nvldumdx.dll Driver File Version: 22.21.0013.8233 (English) Driver Version: 22.21.13.8233 DDI Version: 12 Feature Levels: 12_1,12_0,11_1,11_0,10_1,10_0,9_3,9_2,9_1 Driver Model: WDDM 2.2 Graphics Preemption: DMA Compute Preemption: DMA Miracast: Not Supported Hybrid Graphics GPU: Not Supported Power P-states: Not Supported Driver Attributes: Final Retail Driver Date/Size: 5/16/2017 8:00:00 PM, 885216 bytes WHQL Logo'd: Yes WHQL Date Stamp: Unknown Device Identifier: {D7B71E3E-5488-11CF-DA53-56A51BC2DB35} Vendor ID: 0x10DE Device ID: 0x17C8 SubSys ID: 0x855B1043 Revision ID: 0x00A1 Driver Strong Name: oem17.inf:0f066de3672d1ed2:Section088:22.21.13.8233:pci\ven_10de&dev_17c8 Rank Of Driver: 00D12001 Video Accel: Unknown DXVA2 Modes: DXVA2_ModeMPEG2_VLD DXVA2_ModeVC1_D2010 DXVA2_ModeVC1_VLD DXVA2_ModeH264_VLD_Stereo_Progressive_NoFGT DXVA2_ModeH264_VLD_Stereo_NoFGT DXVA2_ModeH264_VLD_NoFGT DXVA2_ModeHEVC_VLD_Main DXVA2_ModeMPEG4pt2_VLD_Simple DXVA2_ModeMPEG4pt2_VLD_AdvSimple_NoGMC Deinterlace Caps: n/a D3D9 Overlay: Supported DXVA-HD: Supported DDraw Status: Not Available D3D Status: Enabled AGP Status: Not Available MPO Caps: Not Supported MPO Stretch: Not Supported MPO Media Hints: Not Supported MPO Formats: Not Supported ------------- Sound Devices ------------- Description: Remote Audio Default Sound Playback: Yes Default Voice Playback: Yes Hardware ID: Manufacturer ID: 1 Product ID: 100 Type: WDM Driver Name: {3.0.0.00000001}.{6C26BA7D-F0B2-4225-B422-8168C5261E45} Driver Version: () Driver Attributes: Final Retail WHQL Logo'd: No Date and Size: , 0 bytes Other Files: Driver Provider: HW Accel Level: Basic Cap Flags: 0xF1F Min/Max Sample Rate: 100, 200000 Static/Strm HW Mix Bufs: 1, 0 Static/Strm HW 3D Bufs: 0, 0 HW Memory: 0 Voice Management: No EAX(tm) 2.0 Listen/Src: No, No I3DL2(tm) Listen/Src: No, No Sensaura(tm) ZoomFX(tm): No 
