As the title says - I have added requestRenderMode: true to the Viewer initialization code and my static scene is still rendered @ 30FPS with a 5ß0% CPU load.
This is with Cesium 1.41 on Windows 10 with Chrome 64.
What am I missing?
The feature you’re talking about is still actively under development and has not been merged to master or released yet.
See https://github.com/AnalyticalGraphicsInc/cesium/pull/6115
LOL, that explains it 
Working nicely now!
Great to hear!