This won't help KingsGroup.IT though but it is an improvement if you want to keep the miner up after crashes.

KingsGroup.IT, can you post the output of lolMiner.exe --list-devices? I still suspect it's somehow not using both GPUs properly. Also you mentioned Nicehash, do they use lolMiner or a different miner for Zhash? I know they used to use various 3rdparty miners but I never really liked their auto-switching so I preferred to setup miners manually even when mining on Nicehash.