Dynamic light not working for all people on all browser

Hello ! One of my player seems to not see the effect of dyanmic light. I ask him to create a new account, to change the setting of his Token, but that doesn't come from the Token setting, cause if I remove it, he still can see everything. We solve the problem by changing his browser. He used to use Chrome, so he change to Firefox (we're, we don't know why, it's working). I'm using Chrome and I don't have any problem.

One known issue is that if you're using chrome and you have Hardware Acceleration disabled, DL won't work. For info on how to enable it, see here: <a href="http://www.webupd8.org/2014/01/enable-hardware-acceleration-in-chrome.html" rel="nofollow">http://www.webupd8.org/2014/01/enable-hardware-acceleration-in-chrome.html</a>

Thanks guy ! I'll try this in like... 4-5 day.