Fixing OCP crashes on ASUS X870-A in Dying Light 2
I spent a fortune on this rig, only for it to black-screen and reboot after ten minutes of 4K gaming. It was infuriating. The VRM on the ASUS X870-A Snow was seeing ripple fluctuations of 90-120mV during CPU power peaks, which tripped the motherboard's OCP (Overcurrent Protection). I tried capping the power to 80% in software, but I lost 12% performance and it still crashed occasionally—a total waste of time. I went into the BIOS and switched the CPU core voltage from Auto to a manual offset, dropping 1.35V to 1.32V and locking the power limit at 250W. I ran 20 loops of 3DMark with zero errors, and core temps stayed between 72-78℃. I did freeze the system twice during the undervolting process by going too low, but a 0.01V bump stabilized everything. VRM temps are now a healthy 60-65℃. I've backed up the profile, though the VRM still gets surprisingly warm under full load.
