Great idea, poor implementation.

I have no idea about any of the modern versions, nor the interest to test any of them, but there is a reason why I rewrote Neat as part of Ender's Modpack Tools to be more performant as you can notice the slow down, when there are larger groups of entities on the screen.

While at it I also added more option about the look of the overlay, which is why it only gets a 2.5 as it lacks options besides changing the colors.