Luck. That's natural and that's how it is.
Wow awesome peaks.Thanks buddy appreciated

Are you guys getting a lot of invalid shares in mph last day?
MPH doesnt show average numbers,only for current round.Some rounds im getting about +-30% rejected,some rounds very low%.
Just have a look on graph and on Last24h earned.
I asked mph admin
@miningpoolhub I started some hours ago using your zcoin pool, checked just a minute and:
Est. Shares 142,393 (done: 69.81%)
Your Valid 87.7301
Your Invalid 28.8445 (24.74%)
Any tip for improve this insane amount of invalid shares?
Im using last djm's ccminer like its recommended
Thanks in advise
Djm34 build sends normal shares and previous block's shares.
Those previous block's shares are totally useless and treated as invalid. So it's intended action actually.
I believe that invalid share percent goes up and down radically. It should be okay most times, isn't it?