Valkyr Warcry Augment

[(PSN)DAMONIC_SCREAM]

I’ve been experiencing an issue with my Valkyr prime’s warcry. Here augment for warcry allows you to maintain the duration as long as you are getting kills. My issue with it is, when the duration manages to go down to one or two seconds, it feels like the ability already “turned off” before the warcry reaches zero. Even when I manage to get a kill right before it reaches zero, it still feels like it had already been “turned off”, without actually showing the ability is “off”. Like, it prematurely turns off. 
 

i hope this explanation makes sense.