very bad pool luck today --> under 50% 
Not today...two days
i switch to PPS until the luck is back to 100% :-)
my first test with PPS
what is this PPS? i m new here.
There is quite a lot involved but here is a simple way of looking at it...
PPS (Pay Per Share)
If you want a steady, reliable income with no variance the you need a PPS Pool. This would technically have luck at 100% minus any pool fees. The AntPool has PPS fees of 2.5% so it always pays at 97.5%.
PPLNS (Pay Per Last Number of Shares)
If you are a loyal miner, stay with one pool and feel lucky (you could earn more or less, lots of varance) then you want a PPLNS pool. The AntPool PPLNS is at 102% for all time so over the life of the pool it has paid out about 2% better than PPS (4.5% better if you account for the fees).