I turned off assassinate and it got my rogue to function correctly again. /mq2melee assassinate=0
When it's on, it makes him freeze forever unless I manually turn attack on. When it's off it works fine
Make sure you have set the snare % to the right amount in your INI. It defaults to SnareAt=10 which is usually below what a mob will flee at. I've also noticed it will only attempt 1 shot at snare and won't snare again if resisted.