Great summary below -- the only thing I would add is I set freq at 800, but seems to be unit dependent -- has been running solid for three days no drops and I added #xnsub to the pool address found it evened out the hashrates (less errors and stale shares) and less 0 hashrates -- found the sweet spot for the hashrate in my case was between 5.5 and 6.2. The other thing is patience -- I am used to asics that boot quickly -- this thing does not -- let it sit for 5 -10 minutes or so before deciding it is not working.
Hey there
Thank for the info abou the #xnsub
But i have a question.
On the Settings page there is a option called "Check Nonce Submit"
Is that the same or is it somthing else?
Edit: Testing the #xnsub right now. Let's see if it gets better

Edit 2: Does not work for me. Hashrat down by 15-20% and more invalide/rejected shares.
I
think that's because #xnsub and "Check Nonce Submit" is the same think and having both activatet does not work well...