https://blog.wongcw.com/2020/01/14/%e4%b8%80%e5%8a%a060hz%e8%88%87120hz%e5%b0%8d%e6%af%94%e6%b8%ac%e8%a9%a6%ef%bc%9a%e5%be%8c%e8%80%85%e5%ae%8c%e8%83%9c/