macOS Sierra on 2012 Macbook Air. Safari has been quite annoying lately. Sometimes it just thinks there's no internet connection at all. Sometimes it doesn't load pages completely. Most annoying is when viewing Youtube videos. Let's say I'm watching a video, and I clicked another video. Safari will still play the current video, but fail to load the video I wanted. Meanwhile, the surrounding UI of the youtube page is either non-responsive or just plain white. I don't notice internet connectivity issues when I use Chrome. Anybody have similar issues? It's getting really annoying.