I've disabled GV for the moment and I'm right back to 3-4 seconds to placing/receiving calls.
Not sure when this started exactly but I started noticing it well over a month ago. Not a KK/root/s-onoff/etc issue afaict.
(fwiw, no 'don't complain about a free service' replies please.. we don't subscription fee, but we do pay for GV with the data mining and ad hits they get from us)
Love Google Voice but it's making and receiving phone calls nearly useless. With GV phone # integration enabled it regularly take 45-50 seconds to place a call - specifically, from the time you hit dial to hearing the first dialing ring, there's almost a full minute pause. I routinely miss calls because the phone never rings. I'm assuming there's a lot of router hopping or whatever going on over on Google's end.