let me help you here, first thing, having a mid based computer spec wise is fine, the most important component is actually your storage drivers, first off as this is an mmo, your gonna have to have 2 HDDs that have a decent RPM/write speed, non of this laptop or 5700 rpm ones, the write is intensive.

have the game on your main drive, can be boot or the drive which isnt the mass storage, and your other drive which is the mass storage drive with lots of space where the raw footage gets recorded to, if you want to record at full scale 1080 p and at 60fps.
this is all from personal experience and this advice has helped many others. NEVER HAVE THE GAME AND RECORDING DESTINATION on the same drive, the drive cant cope.