There have been problems recently with the hash rate going up and down by large factors when multipools join and leave. This is supposed to be fixed in an upcoming patch to the KGW algorithm that sets the difficulty. In fact, given that we are burning through 10 second blocks again, the current hash rate is likely from a multipool. About a month ago the hash rate was only a few GH/s.
If you find out the answer, please let us know. If this is a result of solo miners with scrypt asics, I don't know how you will ever find out who is responsible.
Stop playing that Multipool card, look at the stats retard, AnonCoin is UNDER Litecoin at the moment on Coinwarz chart (nr:21) but the hashrate is still +18GH/s.
No multipools target a coin that is under LiteCoin cause then no one would use a Multipool, think ffs you mindless drone!