I think some multipool shoot our poor kitteh. Two reasons, because multipool switches to kitteh for a while: high price and low network hashrate.
A huge hashrate power come in and out after. It create glitch with difficulty calculation with our KGW. (PastRateAdjustmentRatio = 308.571)
Similar problem was several times a year ago. All we can do - perform mining with huge patience, may be several days. We already has solve blocks with diff more than 250!
And KGW must be fxied or removed.
UPD We done it! I think it should take more time
Block 757725 diff: 107.41 Total transactions amount is 140656 MEOW (I can see it in my own explorer)
And my tx of 37373 is first in this crazy block
Great
P.S. Before this block (757725) 25 blocks was solved in 5 seconds (because huge hashrate coming) - this is a reason of glitch.