This may be unrelated to the lag, as I seem to recall there may have been some tweaks made to the orc quest recently. Last night we did the mongrelwood orcs quest between 1-2 am est and the boss, after charging into melee range, seemed to break--it stood there for several rounds letting us wail on it until it hit badly wounded, where it healed and fought normally. Others on the quest may have noticed additional issues of lazy AI-- I personally didn't.