I know that I'm not Con, and I'm unsure if this is supposed to be in the tech support category (or if this has even been posted before), but for those of you who like to use Chrome but are having performance problems while playing Dead Zone with Chrome, read on.
I have a simple 4-step solution to PERMANENTLY FIX CHROME.
1: Go to "chrome://plugins" (Minus the quotes, obviously.)
2: Search for Adobe Flash Player. (Should be at or near the top, since Chrome sorts plugins alphabetically.)
3: Look under Adobe for "PepperFlash". (Look for "Shockwave Flash 11.9 r900" if you can't spot it.)
4: Once you've found it, disable it.
And now you can return to using Chrome again.