The most of staking rewards go to top addresses (especially #1 and #3), even 4-5 times in one hour. I haven't got any rewards for 9 hours though I have a few thousand of DMD, about 10 ready to staking piles and status "staking is active".
let me disagree with this.
I even spread a screen of my wallet.

You see, this morning I found a block, as was the case yesterday.