Can you please install driver 368.25 and let me know if you still have the problem? Thanks.

I am also having these issues when browsing gifs (Imgur) 

Sajin
Can you please install driver 368.25 and let me know if you still have the problem? Thanks.

UPDATE
installed and tested in 368.25
1. very good condition in EDGE. No problem for one screen and one video. Little bit in two screen, maybe appear in 0.1s when I open or loading two videos in the same time. but just a part of picture. Normal is great.
2.  Google Chrome
good condition in one screen one video
trouble condition in two screen, Screen Mess even more than lastest version.
For example: full screen mess, green and black screen, frozen, lost frame

UPDATE
I upgraded to the last version. 
I replaced my DELL Monitor video cable from HDMI to DisplayProt, so that I am able to use 60Hz for both of my two monitor.
Condition is much better that past, but still has some problem.
In Windows Edge, it is not PROBLEM for watch two 4K video! NOT PROBLEM!
In Google Chrome, it is much much better at FULL SCREEN when U DONT MOVE YOUR MOUSE! SO WEIRD!
It 100% happens at moving mouse, which screen you move, which screen will shows up the mess!
It will happen when video is loading not long enough (my network is 1000M)
 
My guess is
1. the mess prefer shows up when high CPU use,
2. software doesn't optimize enough.
3. two Monitors have different reflash frequency will cause the mess more heavier.
 
 

This driver should fix it.

UPDATE
just one plug-in fix all problem
h264ify
play youtube with H.264 instead of VP8/VP9