Hi Blissz
1) on version from 21/11 for some reason i dont have your logo
Here are my parameters on overclocking
Voltage to max, fan speed 100% frequency 650 mhz
https://imgur.com/a/dCJx4about the logo: press ctrl + f5
But man that's some serious hashrate

a new record guys?
I hope your electricity is free as it will draw at least 1500 watts of power I guess.
I don't advice to use it 24/7 at this voltage as chances increases something will break.
Furthermore chain 1 is really struggling (look at the HW errors). I advice to lower the frequency on that chain.
My advice: try to aim for 575Mhz / 600Mhz max as daily driver. It will still give you 21Mh/s + speeds, and it's better on the long run