h150i h150I aio pump is flaking out

[Chilli pepper]

So, Posted question regarding the whole rgb thing going on with my cooler, and I have always noticed a 30c to 40c swing in temps at idle... So I started monitoring it closely because I can hear the pump surging... so I watching the telemetry the pump is falling to 0 rpm, and then spooling back to 1400 rpm every three seconds, so now when I put a load the cpu, it throttle almost instantly! If I keep the load going for 15 or 20 minutes my system completely flakes out and freezes up... when the cpu returns below 100c it starts recovering.  I have already requested an rma, but I am wondering if the cooler is bricked because it has never worked as advertised? Open to any suggestion at this point. Thanks