Nist5 mining NHM2 vs Website

[Boumbacomputer]

This issue happen on both my rigs when mining Nist5. Rig no1 is 11gpu, nhm2 is reporting hashing speed of 622MH/s and 0.0022btc/day, Rig no2 is 6 gpu, nhm2 is reporting hashing speed of 353MH/s and 0.0012btc/day. Both rig run asrock H110 pro BTC+, Celeron G3930, 8gb DDR4 and a mix of GTX1060 6gb, 1070, 1070ti and 1080.
Both rig never return any rejected share, yet when I connect on Nicehash statistic webpage, the site report only around 0.0009btc/day and the payout seems to go up with this value. Every other algo report around the same on nhm2 and the website. I have not been hashing nist5 for a while so im not sure this is a issue with the new miner or if its been like that for a while. Where is the other 0.0025btc/day going?

[Boumbacomputer]

Not sure its related, but I also just saw that when mining nist5, the daily balance on NHM2 stop going up and does not refresh. I checked the network connection on both rig to make sure it was still connected, and it works fine. Actually both rig shows up on the stats page of NH. Could it just be the btc/day calculation on NHM2 that's wrong?

[Boumbacomputer]

Redid my nist5 benchmark yesterday before going to bed, my cards report an around of 63MH/s and 0.00022btc/day so my hashing rate make sense. I rebooted both rig, and they were still doing the same thing. I let it run for the night, and this morning my payout was way lower than usual. So for now I just deactivated Nist5 and guess what, now my NHM2 is showing the actual daily balance and is no longer frozen. Anybody have an idea? Thanks for your help