Fixing VRAM instability for Sapphire RX 7650 GRE in STALKER 2
During quick stealth turns, the screen would just freeze for 0.3 seconds. It's a tiny hitch, but it completely kills the rhythm of the game. I used monitoring tools and saw that the Sapphire RX 7650 GRE 8G had significant voltage swings around 1.32V in high-frequency mode, leading to occasional data checksum errors. I tried downclocking the VRAM to 1800MHz, which stopped the stutters but cost me about 12 FPS—I wasn't about to settle for that. I went into the AMD Adrenalin advanced settings, bumped the VRAM voltage to 1.36V, and increased the power limit by 5%. After 4 rounds of stress testing, the 8 checksum errors were completely gone. The first time I bumped the voltage, VRAM temps hit 92℃, so I had to optimize my case airflow to bring them down to 82-86℃. Core temps are stable at 64-70℃. Bandwidth tests confirm no performance loss, and the game finally feels fluid again.
