Maxhash claim that their pool is carefully optimized, aims to reduce var below 100%. In fact it is 130% ( you can check in their stat). I have been mining with them for about 1 week, but the problem hasn't solved, i left yesterday. good luck, miners,
Hey Trung,
Thank you for giving our pool a try and best of luck to you

Yes unfortunately after a successful start (sub 90% variance) the pool has been hit with some exceedingly long blocks and this has pushed our variance a lot higher than where we want it to be. We are actively working on improving this in the back-end. This is why we have chosen to hold off activating our variable fee system has a small compensation to our miners, pool fee is locked at 0%
Hopefully you will give us a try again in the future.
-Team MaxHash