For me mining with WildRig Multi 0.26.0 works well. But it is not enough profitable at current level of network hashrate and BTX price.
ETH mining gives about 1.5 times more than BTX mining.
My config is 8 x GTX1070 and I get about 15-16 Mh/s.
yeah, unfortunately miner not yet fully optimized for NVIDIA gpu's. Hashrate should be at least twice higher, so it will be comparable to values on AMD gpu's.