I was reading about this, loads of stuff that i dont understand, flashbot messing on ethereum blockchain grapping shares and selling them with profit, it was huge amount of eth that is “on hold” by these bots in the “dark forest” 
…yeah i know dark forest wtf, its actually a legit term that they use about a storage in blockchain…allso, in the markets, there is comming new eth asic miners…there might army of them allready online by manufacturer, wouldn´t be the first time this would happen with asic´s…Btc…so they are eating up the shares. I really dont have the answer to this one, just some crumbles of info i came across. If there is anyone with actuall knowledge about why eth block difficulty is sky high, please share the info. Would be nice to know what is actuallu going on and what to expect in the near future 
I am also trying to understand what has happened since the weekend here. the difficulty is in absurd value but if someone has a more technical knowledge of what is happening I would also like to read 
yea… time is come to start looking new coin for mining) Any ideas? lol
I live in China and this maybe some bad news. Just these last two weeks there are mass amounts of cards going for 2000 USD and up. As usual china managed to hoard the supply and as usual they are willing to pay crazy prices in a hype. Huaqianbei in Shenzhen is like the small piece electronics market of the world is in a crazy state atm. Like walmart and best buy black Friday style. If they had open media here this would be all over the news but of course its not. So likely its a zerg of chinese farms swooping in.
Is this something that will remain as is or is possible to revert to previous state?
Well they also cut earnings by 18% too. I think its lower fees and China zerg. Fees will continue to get lower and big cut is happening in July too.
What is the reason it dropped? It’s because the difficulty?
How big? Any info on it?
This is not cool - I thought I was having a bad dream when I looked at my earning, but then I realized what happened and that it is actually true…more hash power since last week (added a card) , and less earnings…
but is anyone able to detect what is going on? is that I don’t see many people talking about it.
I too noticed this.
i had 3000 MH on my farm. last week i had days where i earned 0.18 ETH in a 24 hour period. I believe they were saying there was some “power outage” in china. And now suddenly this surge in difficulty. I think the drop in china hash rate was them taking rigs offline, to replace with ASIC rigs. because when they all came back online, they were much better. The week before and for months before, I was averaging maybe 0.10-0.12 ETH per day… last week was way higher than normal, and now this week is FAR LESS… this week daily I am averaging only 0.08 ETH per 24 hours with my 3000MH… very sad…
the EIP1559 hasn’t even hit yet… i expect the reward to drop 40% with EIP 1559 : because no more fee rewards, only the block rewards or maybe the MEV also…
I am selling off my cards NOW because of this… i cannot handle the fast drop AGAIN… PLUS EIP1559… in a little while, you wont be able to sell the cards for as much…
and then i hope to buy a ton of cards back in early august AFTER 1559 hits… when the market is saturated with CHEAP 5700xt’s… imagine being able to buy a 5700XT for $200… its coming…
I switched from etherminer to T-rex a couple of days ago. The hashrate went up around 10MHz on every 8-card nvidia rig I have. I also got rid of invalid and stale shares. It has been running so stable that it’s almost boring. 
go read on coindesk… there was a headline article on BTC rallying back because ether fees are cut this week.
For ETH mining profitability history graph check out : Ethereum Mining Profitability Chart
According the whattomine ETH is still the most profitable, but it is reassuring to see several other alt coins coming up and nearly matching ETH profitability.
Thanks for the link to the chart morrisdl. It’s very helpful. The problem that I see with the alt coins is that they are so volatile that by the time you switch to one, it’s no longer as profitable by the time you get your rig properly configured and tuned. Hopefully this changes.
I use Nicehash and earnings for my Gminer doing Ethereum seem, if anything, higher than last week, not lower.
For my 3060 rig, I just mine Octopus, as Ethereum on the new “Vox Populi, Vox Dei” firmware that nVidia came up with made Ethereum laughable.
Anything more profitable than Our Favorite Mollusc for the 3060? I have not found it, yet.
I do have the same issue since few days. The expected earning dropped 50% a day.
I use gminer and 2x 1080.
I asked HiveOS support and the only answer I got from them was a copy/paste text that ether my internet connection is slow or the complexity of calculation increased…the they went in “away” status and stopped responding 
If somebody has a good explanation what is going on, please share with us.
thanks.
1st: Network Difficulty huge right now… at 7.22 P
2nd: big price increase, White this seems counter intuitive a large amount of ETH has been soled off by people taking profits that can result in more ETH in the market (quite offended from wallets off the grid and not normally in gen circulation)
I mine cortex and I’m quite happy with the results. Also I can trade it in binance so its more convenient. I’m not sure why doesnt show up as an option in whattomine.com but here you can check the profitability: What To Mine With Nvidia GeForce RTX 3060 Mining Calculator
About the OC: on hiveos I get 2.7g/s. Try 140 core, 1900 memory, 150 PL
Thanks for the info. I was wondering about Cortex, but Binance, I had to inform them I had reported them to the FBI before they coughed up my money they had held onto for three years or so, with an ever-more-insane list of “verifications” they kept demanding.
Do a search for people being shanked by Binance. You will find there are plenty of them.