From the screenshot I see you're not using an ad blocker, so that's good. But low FPS and bad scaling of games probably means that you don't have Flash installed properly, especially since it doesn't work in more than one browser.
Go to Adobe
and download then install Flash Square (64bit Flash) then try again. I recommend you do this from IE rather than Chrome, as installing flash from IE can also reflect on programs such as MSN (animated emoticons and stuff won't work until you install Flash, and in order to make it work [if you want] you need to install Flash from IE)