https://www.reddit.com/r/EtherMining/comments/loxagu/improve...
https://www.tomshardware.com/how-to/optimize-your-gpu-for-et...
Other crypto currencies can work better though.
https://www.nicehash.com/profitability-calculator/nvidia-rtx...
Claims you can earn ~$17 per day if you can get electricity to 10c/kWhr running a single RTX3090 but that's all mining Etherium (DaggerHashimoto) not BTC.
In related news: https://news.ycombinator.com/item?id=26192201
Sounds like with the run crypto is on right now, you can make some pretty decent money.