Hello,
Question about mining Cryptonight on 6x750ti rig.
I am using NiceHashMiner 1.7.3.10 (problem was also present on older versions). Benchmark on cryptonight is 1456H/s, and actual mining is between 1450-1490H/s, but statistic on nicehash.com is reporting accepted speed of 800-900H/s, with 0H/s rejected speed. Where is 500-600H/s lost?
Hard to say. Please provide your address so we can inspect your stats.
However, it is not so uncommon issue on some overclocked cards or older drivers. It can also be parsing error on NHM and it is showing you wrong speed.
I disabled cryptonight for now, until You find a problem.
BR...