Not sure if anyone else is experiencing this. After one attempt on Duke only two shamblers spawn, even with tweaking strats to use 2 shamblers our encounter will lag out. Also clouds are not showing up for anyone in the raid these subsequent attempts. Not only does our instance lag out to the point of members not being able to log back in the rest of instances on the server get our lag. After we leave everyones instances go back to normal. This issue has been going on for the past two weeks.