I have 50 vps running with chainsperday going from 1.18 to 0.9 and I find between 15 to 21 blocks per day.
They were not cloned so entropy is not a problem.
50 VPS with how many cores? Digital Ocean?
If you have cloned instances running is there a way to fix the lack of entropy?
I've got 10 AWS instances running but not seen any blocks for 3 days and they were all launched from the same AMI.