OCLRays Hang

Running a 2013 Mac Pro here and the OCLRays node seems to produce a hang every time I try to use it. I just get a beach ball that spins indefinitely and have to force quit.
The node will work initially but then it hangs as soon as I try to move the tool handle around.
The node will work initially but then it hangs as soon as I try to move the tool handle around.