Instance server issues

I and others have been experiencing extremely bad Instance Server lag since Tuesdays patch. several people from around the US (and Montreal Canada in one case) have been having issues when going into the instance server for the new content. its only in the new content and affects everyone in there. come out or go into 2.0 content and no issues whatsoever. issues include rubber banding, 2-3 second latency and many 90002 disconnects. i can see if it effected one to four people, but not 20-30 from different places. its worse in the evenings which leads me to suspect that the instance servers are overloaded or very close to it. can we please get some fixes to this?