I have been disconnected on 3-4 of my 5 toons almost without exception in big battles in AV, Isle, and WG, anyone else noticing this?

It never used to happen, and I would be able to run a Spearhead AV strat on one computer just fine before (that's 40vs40 essentially) but now if there's a 15v15 close to me, i get DCd on at least a couple of toons.

What could this be? it doesn't seem like GFX issues, so are there any fixes out there?