Dunno. The image quality seems fine to me. Maybe post a screenshot, so we can see what you're talking about? It might also help to mention which browser you're using, your OS, the resolution of your monitor, etc. Might also help to mention which steps you've already taken to try to troubleshoot it, so that people don't waste time by going back and forth with you about things you've already tried. I.e. have you tried disabling all addons? Have you tried using a different browser. Have you tried using a different PC? Do you have this same problem with any other games? Etc.