I have tried FireFox/Chromium under Ubuntu 14.04 LTS & Ubuntu 14.1(with latest drivers obtained from 01.org).
None helps with the playback of flash based streamed content in the browser, combined with 100% CPU usage.
Playback of local HD content doesn't cause any issue.
I can see a small descliminair in 01.org regarding graphics driver for this particular SOC:
"Due to the complex package dependencies of the binary graphics drivers for the Intel Graphics Media Accelerator 3600 Series used in the Intel Atom Processor N2600 Series and Intel Atom Processor N2800 Series, supported drivers are only available through your device manufacturer or through Linux distributions providing support for the Intel GMA 3600"
Which is funny! Intel itself is the manufacturer.
How this can be fixed?