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"
Actually that is not about your CPU, since your NUC has either a Celeron N2820 or a Celeron N2830, with Intel HD graphics. That should work much better under Linux, compared to the Atom N2600 or N2800 graphics (GMA, in that case). Have you tried to upgrade you Flash or Pepperflash plugins?