I have no idea what it is but Firefox is sluggish, laggy, and overall terrible on all of my macs. I have used it a lot on: 2015 Late Imac i7, 395x, 24gb Ram 2012 Mac Pro 12 core, dual 5770, 32gb Ram 2016 Macbook m3 I've had enough!!! and I am being forced to drop my favorite browser. I don't like Safari. What are some browsers that run well on the 12'' Macbook?