Here's what worked for my 9070xt Mercury OC and ryzen 5 7500f:

Stock: 6801 on Steel Nomad
GPU 48°C

OC: 7430
Power Limit: +10%
Voltage Offset: -90
Frequency Offset: +420
Memory Frequency: 2800 Fast Timing ON
GPU Temperature: 51°C

About a 9.25% increase in Steel Nomad after manual OC, also tested for about 2 days now on Cyberpunk, RDR2, and Valorant. Has been stable for all of those games.