ASICs in itself is built in such a way that the hardware chips are coded with a specific algorithm to make them the most efficient of the lot.

OW1 ASIC Miner only supports x16R algorithm and there is no secret method to unlock any more algorithms. It can mine coins specific to x16R algorithm only.

Sure it does but make sure to update the MOB BIOS to the latest version.

Power consumption is crazy but the temps are really cool. What's the ambient temperature?
Please undervolt your cards using OverdriveNtool. I used to get around 29-31 MH/s with cards like RX570s and RX580s consuming 65-75W per card and the temps being 65-75C.
Drop the core clock and memory as much as you can until the card becomes unstable and pump up the memory clock as much as you can.
Also, try different modified BIOS according to the memory vendor of the cards.
NOTE: Please backup BIOS for each and every card individually before performing the above. If you brick it in the process, it's a pain to get it working again.

Crazy rig man!
Are you going to stick with ETH mining or thinking about mining any other coin with the P106s?

Check for any memory errors in HWinfo.
You can lower the core clock as ETH is not affected by the core but the memory.
Also, check the memory vendor of the cards, if it's Hynix. Don't push the memory clock values too much as the cards will become unstable.

75% PL is too low. Try 85 and then 80. I hope that should fix the problem.

The leaked prices are just the baseline.
Once, OEMs get there hands-on, the prices will be pretty more than that.
Not to mention, miner updates to support new-gen GPUs and such before any definitive testing and true capability of the card can be determined.
So, It's a sure waiting game till then.

Yes, you can flash different bios to any AMD card provided it supports that specific model.
Yes, you can edit bios of 8GB card. Just backup your original bios first, then edit it as you see fit and then flash the modified bios.

WARNING: Be aware that bios modding and flashing is a risky task. Also, if you don't know what you're doing, you'll only be putting your card at a risk for brick.

Well, that's true. The price is good and the uncertainty is not something someone wants to deal with.
Anyways, godspeed to you and I hope your endeavour turns out excellent.

Are you using Wi-Fi or ethernet connection?
Also, do you have VPN enabled?
Check if there is any network issue.
Also try to change the server location and check if that works.

Wow! This takes me back.
Anyway, do you have any strategy on selling coins that you are mining or you're keen on selling on daily basis?
Because if there is a high probability that ETH rises in price in the future, then you're better off keeping the coins and selling at a later date which will help you break even faster.

You can check the DAG size for ethash based coins here:
https://crypt0.zone/dag-file-size

Akroma, DubaiCoin, Nilu, Expanse, Ubiq are all under 2GB right now but they won't net much profit.

Are all the cards being detected in the device manager?

Just search for the model number of fan and you may get results in many websites.
Check out Aliexpress and order a few replacements. It should cost around $10 - $15 dollars.
For time being just use a case fan with some twist ties and hook it up directly to the heat sink.

Don't forget to check the cards for a dual bios switch.
My RX580s didn't have any and quite a few of them got bricked and they are of no use now.
It'll give you a failsafe when you'll be bios modding and also backup the bios for all the cards one by one.
Don't make the same mistakes I made.

You won't have to worry about cooling them or heat if you're properly undervolting them.
At most my cards were hashing at 31 MH/s with 75W consumption with 60 C in an ambient temp of 24 C.

There is also the factor of memory vendor in the card.
All the RX 570s and 580s that I bought came with Hynix memory and BIOS modding was a bit of challenge and risk at first but it did produce good results.
The highest hash rate I was able to get from the best card was 31 MH/s which was also unstable at times.

If your problem still persists, then give AMD Blockchain drivers a try.
DDU and install them for Windows 7, then ATI Pixel Patcher, if you have BIOS modded GPUs and then give it a try.

I hope you already know that mining has not been profitable for a while now.
Still, If you want to get started with it. Start slow.
A motherboard with more than 6 PCIe slots is preferable, cheapest Ryzen CPU, 4GB RAM, 60 GB SSD should be fine.
Do not cheap out on the PSU and get Gold rated or better. Corsair RM1000X is good if you are serious about expanding your set-up slowly.
I'll suggest going for GTX 1080ti which can be grabbed for $450 second-hand in a good condition.
Once you have all the parts, it's pretty similar to assembling your PC.

Can you post a screenshot showing the same?
It'll be helpful in figuring out the problem.

Exclude the miner's folder in your anti-virus software if you're using any.
If not, then add an exclusion for that folder in the Windows Defender.
Follow this guide: https://help.veriato.com/products/veriato-investigator/win/en/v76/antivirus/Microsoft_Windows_Defender_7.htm

When I was first starting out with GPU mining, I used to stick with stable coins like ETH.
After a while, I noticed that I can make more $$ by mining SC and then converting them to ETH on a daily basis thus collecting more by doing this.

So, either you can play safe and mine coins that are already well established and are already listed on many exchanges or you can play a bit risky and mine SC in a huge quantity before they are listed on the exchanges and then converting them for the coin of your choice.
It is a bit risky as you never know if the coin will ever get listed, very low price at the time of listing or it being abondened.