Really fast for rendering but slows my whole system when watching video.

The biggest drawback for me is that I have taken Chrome's PDF support for granted. I love being able open PDFs inside of the browser and then save them from there to whichever directory I choose. With Firefox I have to save a copy to the Downloads folder and open that in Preview prior to exporting a new copy to where I want to save it.

Also miss the print preview in Chrome.

We'll see how long with experiment lasts for me. I love how much easier Google has made my life over the years but I would like to move away from their browser.