Need a performance friendly HP Bar

Hi all, I’m working on a mock RTS game for VR and needs a HP bar on top of every units on the field. like the one in starcraft 2.
I followed this tutorial, and made a HP bar out of widget, but the problem is when I drop 100 of them on the scene
fps go from 90 to 30 in VR. So is widget not supposed to be used this way? or is there other way to approach this problem in ue4?

I’ve included 2 pictures of my hp widget. updatehealth function was not called on the test run.