What is your settings with the 15kh/s hash? What did you get with BTM + ETH?
90 PL is a good setting, sweetest spot is like arround 70/80% PL but 90% is pretty fine for the card.
Depends of your fan, temp, airflow etc.
Dual mining is trading 6-7k on BTM for 40mh on Ethash basically, but with a bit higher power consumption (due to high memory clock).
So it depends on what you need ^^
So you get around 9k BTM hash and 40mh on ETHASH at about 90% PL? That's pretty good actually! Will try when I have access to rig.
No special settings/OC for a 2080 Ti to get 15+ Kh/s @ BTM. I have a few ones and they all achive these rates with PL 90+. With PL 110 Gigabyte and EVGA gets 17.2 Kh/s.
Great so looks like this miner is the way to go.