Editor Lagging When Having Textmeshprougui Object With Special Material Selected In The Hierarchy

Hello there

we’re having a problem where if you select a text mesh pro ugui object in the hierarchy the editor starts to become extremely laggy (when trying to drag the rect transform of the text it stutters, even the game in playmode starts to lag)
when resetting the material to the default one by selecting it in the material preset dropdown the lag is gone.
(see gif here where i switch from “TitleMat.mat” to the default material https://gph.is/g/aprL6o4)
but it would be nice to see the actual material without lag. What inside the material could be causing this?

Cheers

I’ll take a look at this.

Now just in case I am not able to reproduce this, could you please submit a bug report with the included project? This would ensure that I am able to reproduce the behavior and quickly find some resolution for this behavior.