Yes this is known issue. We’re improving things. 2.0.1 is already better than 2.0.0 and 2.0.2 is going to be even better.
What it’s doing 30% of time? Stats gathering, background checks etc. Yes we know it’s suboptimal. And we’re working on that.
Let me also note that even with that idle cpu consumption we’re still leaving enough CPU for our k-v layer to be very competitive performance-wise.