We can't comment on the future support for any new coins as we have been burned in the past by this. We can promise you that we will announce any news if and when we are close to releasing it but not too far in advance to avoid false hopes and disappointment. For example, we have a working ProgPOW implementation in our internal test version and will definitely be released when there is firm date or at least decision about switching any of the major coins to ProgPOW.


   It shouldn't be - please check if the hashrate is different if you mine a coin with lower DAG (like UBIQ, etc) or test with -bench 100 for example and then compare with -bench 250 results. We are noticing a small drop in the hashrate of the GTX10x0 cards with ever increasing DAG size but nothing major, so this may be the reason. Also, the Nvidia kernels were changed in the newer versions so this can conceivably be a reason too but in our testing GTX1070 is actually faster with the new drivers. We may provide a way to switch between the different kernel implementations like with -clkernel for AMD cards to solve similar issues with strange card behavior.


  We are adding support for 19.2.1 in the 4.2 development version, for now please don't upgrade to 19.2.1. We have also resolved the problems with fan control with the latest AMD drivers (19.x), which will hopefully also solve any fan control issues with the older AMD drivers, which are experienced by some of the PhoenixMiner users.