The version of ChromeOS it had out of the box was so old that it had a lot of trouble updating itself. It seemed to even have trouble connecting reliably to the wifi. I was worried I would have to update itvwith a usb drive. Once it finally managed to install the first update, it became more stable and  happily updated itself several more times until it caught up. After all that it seems fine. I bought it as a Google docs machine and it does that just fine. I have it using an external monitor via a usb-c to displayport cable and that's also working well.