This coin has a serious difficulty problem.
No, it has fixed diff problem.
Its definitely fixed for now.
The spikes are results by people thinking it's brain to hit on the network a >100% nice-hash rent or make a heavy pool hopper and let the others solve the difficulty increase.
Btw.
Just to optimize my miner software/settings I created my own pool to be rid of connection lags.
I found out that over/under clocking 1050/1050Ti is a waste of time under linux, the cards run perfectly on their best settings already, only under windows 7 & 10 it was necessary.
With a hash rate of 3 khs@24h I mined 1 block.
Pool was only full functional ~ 7-8h out of the 24h
Mining it was more accidental, just happened 40 m ago during the removal of one miner after the other.
Finding the block killed the pool btw, but it was running on remote putty so not the brain on my side.
A really buggy first running pool, but finally a functional pool by using ubuntu 14_04 LTS ^^
I cant recommend creating your own pool if you don't have some experience except for educational usage.
I didn't get the payout system working nor any additional demons for redundancy, html only local access etc.
But it did work and that with most work done by remote control over the phone
*edit: finding the block did not kill it, the board just slowly died with several restarts. Don't use the board of an old mining rig