Estimated Monitor Framerate incorrect?

Retroarch reports my monitors estimated framerate as 60hz but I am using a 120/144hz monitor. It doesn’t seem to be affecting much but anyone know why this is?

I’m not sure why, but that’s just how it is. I leave the Refresh Rate setting at the default 59.950hz on my 120hz monitor and set Vsync Swap Interval to 2 to fix scrolling stuttering.