Hi to all
I decided to expose my prob here after so many searches and unsuccessful attempts...

To start here my config :
-Win 7 pro X64
-i7 3930k with asus P9X79
-32 Go DDR3
-128 GB SSD
-2x Titan X (pascal) 12Go DDR5x

I tried to mine eth with Claymore and ethminer genoil and i had always the same result ; only 6.5 mhs for each cards... I know i can have really better hashrate but it seems impossible !
I tried so many things found on every forum but without results...

I tried other coins:
- Zcash (with zec miner) -> 400 sol/s for each
- SiaCoin (with marlin) -> 1500 mh/s for each

I don't know if those hashrate are normal or not, if my problem concerns only eth or all coins

Please help me !!!

(sry for my english, not my native language..)