Buff fade delay duration

Hi all, i remember theres a place to set the delay of buff duration. But i can't find it anymore.

I tried searching at gameplay constant and i tried changing the value of duration in Devotion Aura. But when i remove Devotion Aura, the buff will still stay on the hero for 2 seconds.

Please help, thanks in advance!

check aura duration field (4 by default) and [lay with it.