A user is observing 10% -15% performance degradation in SketchUp 2016 wrt SketchUp 2015 on his Surface Pro 4. I am unable to replicate the behavior at my end. If you have a Surface Pro 4, please run a test and post your observations here. Load a good sized SketchUp file in both versions , open Window>Ruby Console and type
Test.time_display, upload the screenshots of your result. See mine.
Thank you very much for your help.