It's definitely cuda 9.2 with 399.24 drivers (cuda 10 is experimental and slower).
yeah, I've also tried cuda 10 with 400 drivers and h\r was a blit slower with gtx1070\1080(ti), so I rolled back to 399.24
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FeGcptDS.jpg&t=663&c=fKMbCnBqT388aQ)
Never thought i could reach 40mh/s but thanks to this miner it's possible.
Latest cuda/Driver
Edit stable for almost two days
P.S. 1080ti gives about 25-27Mh/s. but not 40 as u are sure.