First off, love the unified dashboard that SMOS offers, and the ease of Rig management that it brings to the table.
I have been running SMOS on a USB 3 pendrive, on an Asrock Pro BTC V2 based system with 6 x RX 470 4GB cards.
Here are a few issues that stop me from adopting SMOS on all my machines :
1) SMOS hashes about 3.5% lower than windows for Ethereum Claymores 9.0
2) GPU0 is stuck on ~4mh/s no matter what
3) Rest of the GPU's also periodically drop to 4mh/s but then recover to their usual hash quickly
4) GPU fans spin up and down like crazy in SMOS, while windows had the fans gradually increasing/decreasing in speed
But I have kept a keep eye on your OS, and have a test machine on it always, so I do believe that I will shift all my rigs to it one day.
Thank you for making this wonderful OS and for keeping it free while you can address the issues/work out the bugs.
2) Try making higher PowerStage in this rig propably to 6 or 7. Try little different clocks also.
3) Do you have any undervolting ?
4) Try setting higher minimum fan speed. This script need some tuning but making higher minimum % fan speed makes it better. What is your Target Temperature ?
UPDATE "ALPHA PREVIEW"
P.S - i am Adopting new dashboard and accually i am movig forward.
I will be based in 90% in Jquery Ajax so there wont be any whole page reloads and only div replaces.
As i will migrate all current setting i will release it to production, then i will start making next crucial features like grouping (finally )