How to stabilize RAM EXPO on Biostar B650MT for Metro Awakening?
I couldn't take it anymore. In those claustrophobic tunnels, I'd get a 0.1-second micro-stutter every few steps, which felt like the game was physically pulling back. With the default EXPO profile at 6000MHz on my Biostar B650MT, the SoC voltage was hovering around 1.2V, causing slight clock offsets in the FCLK sync. I tried dropping the RAM speed to 5200MHz, but while the stutters stopped, my 1% lows tanked from 55 to 42 FPS—that was a garbage trade-off. Instead, I went into the BIOS and manually locked the SoC voltage at 1.25V and loosened the tRFC from 480 to 520. In AIDA64, memory latency stayed rock solid at 68-72ns and the stutters vanished. I actually tried 1.3V once and the RAM temp spiked to 65℃ instantly, so I backed it off to 1.25V. Now RAM is 48-54℃ and the CPU is 70-76℃. I saved the whole config to a BIOS profile so I don't have to do this again. SoC voltage is now a steady 1.25V.
