I've only used Github desktop briefly so I can't say much about it, was commenting on the web UI. I suppose if I was using a lot of GitHub functionality vs. just using github.com as a repo things might be different and I'd give Github desktop another try.
Sorry, that's what I meant actually, the web UI. I said desktop to differentiate it from the mobile web UI, but I realize that was the wrong way to say it because they also have a desktop app.