And if a 1060 3GB is now unusable on Nicehash, what sort of GPU do I need? A 3060? And how much RAM is the minimum these days?
1060 3GB listed here - only works on NHM and NHOS, not the Quick miner...pretty sure most algos need 4GB though...so most benchmarks will fail, make sure you manuayly "tick" all benchmarks
https://www.nicehash.com/mining-hardware
Just trying to point him in the right direction, OP is specifically asking about his card and NH.
Nowadays you need to have more knowledge and capabilities in mining if you want to earn money rather than passive income of a few cents a day from one old video card.