I have 2 major problems with medium:

1) Something on their page causes my browser to use up 100% CPU. Navigating away or using readermode fixes the problem. I suspect they have a CSS animation on an element.

2) After loading the page, wait a few minutes, the page reloads by itself. 4 times out of 5, it will fail to reload itself and display "500 Oops, we couldn't load that article" or something like that.

Utterly shit experience. It seems like I'm the only person experiencing these problems because I can't find any discussion online about these really annoying problems.