Hello, I'm mining bip on http://bip.ms-pool.net.ua/ right now and I'm experiencing some strange things

- I'm using claymore cryptonote miner v9.7
- port - 7777

I can see 1400-1550 h/s in miner
Pool showing various values from 300 h/s to 2500 hs

Is this normal or something is wrong with miner/pool?

Edit: The share submitting is unstable, probably that's the reason... Switch to 5555 did't help