Windows Task Manager will show you GPU utilization on the Performance tab. Start Task Manager, then start your browser and see if there is an uptick. Then start a meeting to see if there is another one. There probably won't be. Then, disable the software rendering override in your browser: (Firefox: https://wiki.mozilla.org/Blocklisting/Blocked_Graphics_Drive...) (Chrome: https://superuser.com/questions/836832/how-can-i-enable-webg...) and test again. Probably need to restart the browser after the change in settings.