i can see big fluctuations in diff (jumping up and down) which means some profitability pool is jumping in and out

but it's really looking good on sell side, there is no sell walls, only like 1.x btc sell orders, it's nothing...shame that on buy side it's the same..
Big fluctuations in diff with this coin is not caused by pool jumping, but this is due moronic proposal when difficulty varies with each block.