Not all my 580 cards can give 34MH/s. Depends on card quality. Range of speeds is 33.5-34.1MH/s.
Only ONE card on screenshot... Where others "not all"?

Stable means loooong runtime. Runtime is 01 minute and 0 shares found on screenshot. Im sure the reason is its not possible to make screenshot showing 5 or more cards running stable (more than week or so) and hashing hashes you declared.
But no wonder
Ill treat with understanding if its not possible at the moment.
95W showed by miner and GPU-Z, so about 110W from wall
-cclock 1250 -cvddc 925 -mclock 2250 -mvddc 837
Blessed are those who believe. I've got nothing more to say, but to give an advice to buy wattmeter

The suggestion:
It looks like you have some rigs running stable and hashing the way you describe. To be a gentleman just screenshot rigs containing cards of a good quality in Claymores miner manager or a part of it if you shy to show all of your power.
Thanks
I have a RX580 sitting idle in a single machine. I would love to put those settings to the test. Can you post your full config that you used to use on PM? I don't have current drivers so I am able to run it.