Ok, once again, here we go...
When was the low point for the CP, because of the British blockade?
Turnip Winter 0f 1916-1917.
After that, historically the US DoW's the CP in April, 1917, but that doesn't happen here, does it? The worst was already over, before the USA entered the war.
This is historical fact, and predates the PoD, check?
That was also locked in a life or death struggle with the world's second largest navy, you mean?
Also, the US doesn't even have to enter the war against the Entente, as they can just start seizing Entente merchantmen in American waters, as a direct reprisal for seizures of US vassals attempting to trade with Germany, and by American Waters, I'm not talking just US territorial waters, but all western hemispherical waters, as in North American, Central American, and South American waters, mind you. Without a shot being fired, the British start losing their ships, until and unless they stop interfering with US ships.
Not even the most die hard hawks in the UK government want a war with the USA in 1916, and so when the US wants to freely trade with all of Europe once the Entente can no longer continue to buy all we want/need to sell, what happens? First will come the economic sanctions, then trade restrictions, boycotts, embargo's, and then at least, seizures of Entente shipping. If the Entente wants to declare war on the USA for not sitting idly by and having her rights trampled upon...
How many US merchantmen are sunk by u boats, vs seized/turned back by British warships? U boats might be forgiven for mistaking an American ship for a hostile ship, especially when the Entente flies the US flag on their ships, but when you actually board a US ship and still knowingly interfere?
You and I have had this conversation before, you still keep coming back with a whole lot of nothing, other than empty rhetoric, and anti-german bias, which anyone that cares to read for themselves can look up if they don't already know. If you can provide facts to back your narrative, that the Germans MUST attack in 1918 in a world where the USA isn't fighting against them, I'm all ears.
Although I have alluded to the freedom the CP armies can have to let 10,000's of their troops go home on leave once Russia folds, I've not yet pointed out that the horses tied up on the eastern front can go back to agricultural work now as well, so how much more food is going to get planted with 100,000's of horses now working on crops? No US entry in the war by itself takes a huge load off the CP, and we are not even mentioning how much earlier than OTL this takes place.