in my opinion the perk should last longer than 30 seconds.
like, thats barely enough time to get over to the gen in the first place, but you also gotta find the survivor and chase them to get any use out of the perk.
and honestly, 30 seconds is not nearly enough for that.
my suggestion is to make it last 60/70/80 seconds.
its a 24m radius. you can still get out of that rather easily.
just... 30 seconds is not enough.