I posted a thread earlier, but yeah, feeding frenzy is apparently causing instance and ping problems. Throughout the entire way to maps I was heavily spiking until I got to maps and found a thread where some people tested feeding frenzy and fixed their issues when they removed it.

You can just see the first and last min of the video.

Yeah I just got DC'd halfway through a blight map. When I logged back in the map was gone.

Does feeding frenzy work on Slave Drivers?

Feeding frenzy causing ping spikes and instance crashes