Yeah the ltc miners are very lucky, cause once it settles it never jumps again. Now for eth is different, it jumps every day and forever as long as stays pow hehe
that because they planned to activate pos at some point, and there is a difficulty boom now, which rise regardless of the hashrate, litecoin is dominant by asic, it's normal that the diff jump very high, and with the new l3 and l3+ it rise even faster, but no complain i don't like litecoin and i don't own any, i just ignore it altogether
Scrypt (Litecoin) only sees significant difficulty jumps the last few months when Bitmain starts shipping a new batch of the L3+
Innosilicon is still selling the A4 (and they just had to order chips for a new batch) but they're still WAY high on the pricing for the performance so I suspect their A4 sales are a LOT lower.
The reason difficulty was FLAT for ballpark a year was that NOBODY was making new Scrypt miners at all for a long time - Innosilicon had closed out it's last stock of A2 chips and had a long gestation period on the A4, and Bitmain apparently wasn't interested 'till Litecoin price started climbing noticeably due to the Segwit adoption threshold getting very close for a while.
Litecoin price is proving quite a bit more resiliant than most altcoins have been the last 2 weeks - it's even gained a little vs Bitcoin over that period. If it SAYS in the $40+ range, it might end up being the most profitable coin to mine pretty soon now, despite L3+ deployment in bulk batches.