If you had 3 x 3060 LHR cards…how would you mine?

Currently have one card for testing on:

HiveOs / 2miners / T-Rex

Standard OC settings and card temp at 61C. Only getting on average 14-17 hashrate. Was hoping for 20+

I am using standard NVidia driver.

What would you do differently to improve or change for setting up all three?

Very new to mining in general and love RVN community.

Thanks for any input.