I have done the following steps:
Installed cesium and node.js and started node to server up maps.
Navigated to localhost:8080 in firefox - Version 46.0.1
firefox consumes approx. 75% CPU. Verified that “Use hardware acceleration when available” is enabled in the browser.
In chrome the CPU sits at about 15%.
I am running Fedora release 23.
Question: Why does firefox consume so much CPU?