CCMiner -CPU Usage issue when setting power usage


I have a really strange issue

My setup is 4x1080Ti 4x 1060 6gb
Octominer board, 8 gb ram

When using CCMiner to mine LyraRev2(could be happening on other algos too, have not tested) My CPU usage skyrockets the moment i try to limit the power usage on the cards. Having negative effects on the hashrate

If i remove the power limits, everything returns to normal and i get close to what im expecting in hashrate

I know the octominer has a puny CPU but its just strange that limiting the power has such a huge effect on CPU usage.