You need to tell us a little more about your setup, like what your values are on the board
For the sake of saying it:
-make sure the eyes are clean
-make sure you're using a hopper than can keep up with the gun
-make sure you have a fresh battery
-make sure your rate of fire isnt something absurd that your gun cant even cycle at
You said you'd lubed your bolt. It may be that you haven't fully reassembled the bolt. Once you have the back cap off, take the bolt out completely and make sure that you have the can and manifold attached. The can will not always thread onto the manifold if you just remove the back cap. If you have the manual, page 14.