SP3 & W10 mini display issue

[bobbely]

Since I have upgraded my Surface Pro 3 to Windows 10, when I extend the display with a second screen (via mini display port), there is no sound and videos are slow!

Someone has the same issue? How to fix this?

 

[bobbely]

Up!

I think I will rollback to Windows 8.1 if there is no fix for this problem, sadly.