Why is my Vastarmor RX 9070 XT overheating in Red Dead Redemption 2?
Riding through the snowy mountains, the core temp would skyrocket to 88℃, causing the clock to tank from 2.8GHz down to 2.1GHz. You can really feel the performance dip. The 'Super Alloy' cooler on the Vastarmor RX 9070 XT was hitting its thermal saturation point, and the heat just wasn't moving away from the core fast enough. I tried limiting the max processor state in Windows, which dropped temps by 5℃ but cost me 20 FPS—that just made me want to try a proper undervolt. I went into the advanced driver settings, dropped the core voltage to 1.05V, and switched the fan profile from 'Quiet' to 'Performance'. Monitoring showed core temps stabilizing between 68-75℃ and clocks tightening up to 2.6-2.8GHz. I actually had a boot loop after the first undervolt attempt, but bumping it back to 1.08V made it rock solid. Fans now sit around 1800 RPM. I switched the global scheduling mode to 'Extreme', and the temps are holding steady at 68-75℃.
