Could you link that article? I searched and couldn't find it on hN.
I believe the article was http://pzemtsov.github.io/2017/07/23/the-slow-currenttimemil... Although I couldn't easily find it in my history or on HN. I had to resort to the Googles.
Case in point is the recent article posted on HN about the platform specific details of getTimeMilliseconds() in Java.