Here's a new post from 2016, more than a year after the last post. Tried the new browser Vivaldi, a 2016 release and found that it loads twice as fast as all the browsers I've tried, at least a dozen, and is smooth as silk, unless someone with a bad connection in Alt games ruins the game which happens all too often.
For the speed of loading and smoothness of meter, I now use this exclusively for WGT. One click and it loads in a few seconds. I have windows 10 and Edge as a backup but Vivaldi is my go to browser.