I have a recurrent issue where I have two graphics cards in my laptop (it's practically a standard for years now). A decent high power card, and a simple low power card maybe integrated into the processor.

When you start an application, one of the two cards will handle that application.

I generally can't my browser with the high power card; probably because browser vendors don't want to sacrifice battery life all of the time for some fancy effects a small slice of the time.

But I'm no expert. Chrome seems to handle things better than Firefox, that's why I still have it.