I run full Windows 10 on a tablet (dual core, 2GB RAM), and it's pretty amazing to me how many websites that have no reason to run slow completely fail on it.

I can only imagine it works fine on dev machines with much faster quad+ cores and 64GB of RAM or whatever.

Just as an aside, it's done a lot to have the tablet be my primary "fiddle-at-home" machine: keeps me really conscious of resource limits, including ones I normally don't think of like screen size. (Most websites render terribly in landscape on a 10" tablet.)