Pheonix Miner is junk with 2000/3000 series Nvidia cards.
IMHO T-rex is good, but use Gminer. Gminer has been extremely stable for me and only 0.65% DevFee on ETH.
Let me know Xazax310 if you got better hash rate for ETH than that on Gminer:
1660 Super: 31.82 MH/s
3070: 62.37 MH/s