У вашего броузера проблема в совместимости с HTML5
1-FIRST OF ALL U NEED TO GO TO UR DOCUMENTS,Assassin's Creed IV Black Flag,Assassin4/Assassin4.ini
2-COPY WITH ALL MY SETTING ND DELETE UR ALL [Graphics_DX11],PASTE MINE ND SAVE.
GRAPHICS WILL BE LOW BT GAME WILL WORK FINE.
3-THEN GO TO UR AC-IV.EXE,PROPERTIES,COMPATIBILITY ND CHECK {RUN THIS PROGRAM IN COMPATIBILITY MODE 4}:(chose ur windows).GO LIL DOWN ND CHECK [RUN THIS PROGRAM AS AN ADMINISTRATOR]
4-THEN INSTALL UR GRAPHICS CARD ex:INTEL,NVIDIA,AMD AND UPDATE UR DRIVER.
http://www.nvidia.com/Download/index.aspx?lang=en-us
http://www.intel.com/support/siu.htm
http://support.amd.com/en-us/download
[Graphics_DX11]
AdapterVendorID=32902
AdapterDeviceID=358
MonitorDesc=Generic PnP Monitor
DisplayWidth=800
DisplayHeight=600
RefreshRate=60
MultiSampleType=0
VSync=0
EnvironmentQuality=0
TextureQuality=0
ShadowQuality=0
ReflectionQuality=0
CharacterQuality=0
PostFX=0
VolumetricFog=0
DisplayableRefreshRate=60
AntiAliasingMode=0
GodRays=0
MotionBlur=0
SSAO=0
UseVolumetricFog=0
------------------------------------------THANKS-----------------------------------------