Ok I don't entirely believe ttk is bad right now, but it should be that your resilience is past a certain amount. I.e, resilience is over idk 5, your a 4tap kill with say a Hand Cannon(just an example), but under that and you can get three tapped. This is where making Mobility effect our sprint speed, as well as buffing Recovery and really increasing that regen speed. So yes lower ttk, when resilience is low, but also make it vastly noticeable in focusing points in these three attributes.