Firefox 48 crashes at startup if websense is installed. Right now, they aren't sure how to fix it. The hotfix was deployed to people using Firefox 47 and lower (down to 40) to detect if websense is installed, and if so, not update Firefox yet.

I don't see how it would affect game rendering. It's probably not the cause, considering disabling it doesn't fix the problem. :)

What games are you having the problem with? If you can provide the address, we can check what the cause might be. If it's on Facebook, try the solutions at Fix problems with Facebook games, chat and more.

Hi mssypglt1, I'm adding your screenshot to this thread so we can keep all of the discussion of this problem in one place.

What if you adjust the zoom level on the page? You can hold down the Ctrl key and press the + key a few times, or the - key a few times, to see whether the Flash content fills the available space any better.

Thanks for your suggestion, but that did not work. Is there another name for hotfix that may be in my programs and features that I can uninstall? It seems to be included in the Firefox update 48.0.2 and no matter if I disable or remove it, the problem is still there. I may have to switch to IE because it works just fine!