Hey there, I just bough a third monitor and want to use my MacBook in clamshell mode with the BookArc. Most of the time when using an external Monitor my fans will start kicking in after some time and this also happens with the BookArc. Will my macbook overheat with the BookArc with three external displays and cpu intense work? Thanks! Ps. I use a MacBook Air BookArc with my 15" rMBP.