I have to say, with a balance of less than 1400 DMD, my stake average is over 1 DMD per day.
That's 27%, which is unrivaled for this level of investment!
Is there a minimum amount to keep in the wallet for staking ? I've had 10 DMD in mine for months, and haven't seen a single stake payment.
You can theoretically stake with just 10 DMD, but the best pile size is around 200. With that said, people have staked with piles as small as 0.1 or even 0.01 DMD. It's pretty random. Your odds improve with larger pile sizes. You might check coin control and see if your 10 DMD are all in a single pile or if there are multiple piles. If there are multiple piles I'd suggest consolidating them into one pile.
10 DMD will on average find like 2-3 blocks a year
and only if u have the whole year staking active 24/7
i would start consider run a 24/7 node when i have 200 DMD (average once a week a POS block)
or smaller amounts if u run a computer anyway 24/7