Does this happen in every game or just a specific game? This doesn't look like something the standard troubleshooting guide can help with, but it certainly won't hurt anything either. The stuff from Step 4 is going to be the most important, but if you
could pretty please humor me by doing steps 1-3 first that will clear away the low-hanging fruit. :) Can you please follow Steps 1-3
of our Solving Technical Issues checklist (confirm you're using the latest non-test version of Firefox or Chrome and if possible test your situation in both browsers; turn off all extensions, addons, and anti-virus; and clear your cache) to see if
one of those components is causing the problem? We can only help if we
can recreate your issue, so it is important that you follow each step. If doing that fixes the issue, just let us know. Otherwise, move on to Step 4 , and we'll need all that information to further assist you.