I would like to warn all of you out there regarding the S11 miner. I bought a batch recently and half of them could only get about 3.2T Hashrate even when overclocked. Advertised is 3.83T at factory settings.
I asked support and they said it's the mining pool problem, there's nothing wrong with their miners. I have tried all the mining pools out there and all of them were reporting only 3.2T.
I have upgraded to the latest 11 May firmware and the issue remains. They want me to ship back the miners at my own cost to be replaced but I won't be doing that. The loss in income and shipping fees will not be worth it. So beware if you want to purchase anything from Innosilicon again. The support sucks to the core.
I can provide evidence but the conversations are in Chinese. Anyone who wants evidence of the conversation can PM me.
On miner status at bottom of page what is the hashrate of each of the 3 boards?
All the hashrates on the miners itself is fine. its shown as 4.2T total and each board is doing 1.4T.
The problem is that all the pools siamining, luxor, f2pool are rejecting 20-25% of the hashrates. So Inno support is saying there is nothing they can do and the mining pools have a problem. That's bullshit to me.
I'm no expert but I'll at least try to suggest a few things. My apologies if you've already tried some or all of these.
Make sure you're configured to use a stratum connection in the URL for the pool you're connecting to. Older TCP setups are not as efficient as stratum.
I assume you're hard-wired and not trying to do a wireless (or cellular) connection between miners and internet - if not, try hard-wire.
You can also quickly eliminate your network hardware and ISP by trying a miner at some other location - friend/relatives house for a couple hours and see if things are different.
If you have a puma-chipset cablemodem, replace it. There was a thread somewhere here I thought that talked about the latency issues causing trouble with some ASICS.
https://www.theregister.co.uk/2017/08/09/intel_puma_modem_woes/Temporarily remove whatever networking hardware you have in between your ASIC and the router, to eliminate any issues they might cause.
Most pools have more than one farm you can connect to (east coast, west coast, europe, etc). Most people would assume the closest geographical site is the best, but that's not always the case depending on the peering agreements your ISP has - try a different one to see if you have different results.
I know you mentioned siamining, luxor, and f2pool. Might be worth trying Nicehash to see if you get the same rejection rate. I feel NiceHash doesn't pay as well, but if you get better hashrate there it might offset what you'd be losing.
NiceHash also has a tutorial on their website for setting up a stratum proxy on your PC. I tinkered with that back when I had Innosilicon A4 Scrypt miners. I don't know if it will work with Sia, but might be worth tinkering with.
I hope the best for you, I know it can be painful to spend this kind of money on hardware and not get the full value from it.