ARMs are mostly horrible in case of drivers. I have an Acer Chromebook 13 with nVidia Tegra K1. Around the beginning of this year videos can get pixelated [1]. Generally there are few graphical glitches - boot splash screen can have many short black lines overlaid, mouse cursor can have some random garbage in it.

I had to once wait over an update, because it broke the system. It had symptoms of GPU driver issue.

Generally I'm quite pleased with the machine, but I wouldn't buy another ARM Chromebook. Rockchip SoCs have drivers mostly open source from what I understand, but GPU driver is not OS. Intel is safer bet. I really like the idea of AMD Chromebook, but you can't have everything.

[1] https://productforums.google.com/forum/#!msg/chromebook-cent...