Performance on Color Lerping

I noticed that there's a big drop in performance when trying to change the color property of multiple numbers (around 20+) of Image/Text components.

I'm using this behavior for my action game where lots of damage numbers pop up then fade out. First, I thought it was a problem of creating those damage number objects since I'm not pooling them. I turned off the script that lerps the color over a set time and the game is smooth again (my first guess was wrong)

Another thing, after I built it for web, it seems that the game is smooth again. I'm assuming that this is an editor-only performance drop but I don't know of a way to test that.

I'm using Beta 20.

Thanks!

 

Up. Anyone experiencing the same problem or know what's happening?