Find your favorite ETH miner in Nicehash’s plugins/internals folders and just command-line it with a batch file.
I am using Gminer in exactly that manner, while letting my Threadripper mine XMR on Nicehash through their software and GUI.
Curious how anyone manages over 25Mh/s on ETH right now on 3060’s, but I don’t really care, as my rig is making money day in and day out. What is interesting is that my cards all started at 47 or so Mh on Eth, then wimped out to 22 after a few minutes. I think this would be an easy fix, TBQH, but we will see.