There was an update a couple of days ago to the Chrome browser. Ever since then the pepperflash keeps re-enableing itself. You have to disable it every time you open your browser. It is best if you download COMODO DRAGON browser and start to use that for the game. You do not get the problem with a pepperflash then.
To disable your pepperflash type, Chrome://plugins, into your search box and a page will come up with all your extensions on. In the top right corner of the page there is a tab marked, Details. Hit that and it opens the extensions. Look for the Flash Player and disable the pepperflash. Then go straight to your WGT Page. Do not log out or you will have to do it all over again. Its the pepperflash which is causing the lag.
Mel