WebGL optimization can be a little tough, I’ll see what I can do. WebGL from my experience doesn’t take full advantage of your hardware and fullscreen only exacerbates this.
Until we figure out a good graphical compromise for this platform I recommend checking out the Settings on the main menu, Quality will help the most since it knocks the shadows and lighting quality a bit lower. Our WebGL build is brand new since we only got the name generator to work on that platform yesterday, so there’ll be some growing pains while we get it right.