I tested it recently, played 4 story battles and it use on Vulcan 1-20% of i5 2500k @ 4.5ghz, lowest CPU usage I ever got on RPCS3.
There is some fps issue, which block fps to 43-45 even on off setting.
In preparation for upcoming changes to the compatibility database, this thread is being moved to ingame. Due to other threads for the same media (Disc or PSN) already being in that category.