I've found other settings on the internet for the 1050ti and I'm now doing 15,2 Mh/s on ethereum mining with the claymore miner.

I've used msi afterburner and used the next settings:
Power limit: 75%
Core Clock: -400
Memory Clock: +860

Rest is completely stock. Fans are off now and then and temperature is continuously between 55-61 degrees Celsius.

I'm using this setting for a day now and eth gives me constant 15.2 mh/s.

Some people even set there memory to +1000 or above but I want to keep it a little on the safe side.

Keep in mind though that every coin mining is different. Ethmining relies mostly on the GPU memory, not GPU clock. Upping the clock really does nothing for eth mining except for heating your card