If I am not mistaken UWKProcess.exe, the html5 webviewer is taking up around 20% of my CPU. Where is game is taking up only ~11%.
It seems that the webviewer using alot of CPU resources.
Windows 10 Build 10240 Intel 3350P 3.4 Ghz
EDIT: After a bit of experimenting.... UWKProcess.exe is now also taking up a huge chunk of RAM. It's using 830 MB of RAM ATM and everytime you refresh or open a page it takes up more memory.
For a comparison UWKProcess.exe is a html5 webviewer which keeps 5 pages loaded in the game. Mozilla Firefox a fully featured browser is using up 450 MB with 2% CPU usage with 5 windows and a total of 6 tabs.