Quote Originally Posted by Adronson
Well I tried Wougoose's settings -- 60hz with Vertical Sync and Triple Buffering and it seems to be stable. I'm running three on one machine. Haven't had time to do a real push in an instance yet, but I am not getting disconnects in some of the places that had previously given me difficulties. A tentative congratulations (with my fingers crossed that it holds).
Admittedly extremely skeptical that a purely client side graphical setting could possibly have anything at all to do with connectivity. But being desprate for a fix I have given this a try.

I did the following:

-Set monitor refresh rate to 60 on both machines
-Logged into the game, set refresh to 60, enabled vsync and trip buff
-Logged out of the game
-Deleted Cache folder in WOW directory
-rebooted both machines and reset the router
-Logged into the game to recieve fresh Cache data
-Logged out of the game and rebooted both machines
-Logged into the game and stood idle for 10 minutes, tapping move occaisionaly to prevent auto afk flag

Observations:
Average latency increased from 60 ish to 120 ish. This is possibly due to the fact that it is getting later in the day and server traffic is higher. Average Bandwidth IN increaed from around 650 ish to 750 ish. Average Bandwidth OUT increaed from 18 ish to 25 ish.

After sitting idle for awhile one char put the other on /follow

Bandwidth OUT on the follow immediately began to rapidly rise. Bandwidth IN on the leader immediately began to rise.
Latency on the leader went up to over 200.

Bascially - No Change

Monitor refresh rates, vertical sync settings, etc, are client side hardware / driver settings for your display and display adapter. They don't have a damn thing to do with connectivity and server communication.