UserAgent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36

Example URL:
http://www.tetesaclaques.tv/superbol_videpisode2964

Steps to reproduce the problem:
1. Play Flash video in fullscreen
2. Watch CPU usage with Windows Task Manager
3. 

What is the expected behavior?
Same CPU usage as others browsers

What went wrong?
CPU usage above 10% higher than other browser

IE12 and Firefox : around 35%
Chrome : around 52%

If I connect my laptop to a 1920x1080 monitor, CPU usage of Chrome is much higher.

Did this work before? Yes When Chrome was using flash npapi plugin (same as Firefox)

Is it a problem with Flash or HTML5? Flash

Does this work in other browsers? Yes 

Chrome version: 49.0.2623.87  Channel: stable
OS Version: 6.3
Flash Version: Shockwave Flash 20.0 r0

Chrome://GPU
Graphics Feature Status
Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Enabled
Rasterization: Software only. Hardware acceleration disabled
Video Decode: Hardware accelerated
Video Encode: Hardware accelerated
WebGL: Hardware accelerated

My laptop:
I5 5200U
8 GB Ram
1366x768 screen resolution