It really depends on the polish of Fuchsia for Nest Hubs. Getting a few more FPS out of the 1st gen hardware is something I'm actually hoping for because it's gotten really slow and I rarily touch the screen anymore because of the lag.
Seriously, this device is only a few years old and it runs like a 2013 windows netbook. Apps crash all the time, bluetooth glitches, unresponsive UI, etc.