Silent Hill 2 Remake is stuttering in complex scenes on my MSI A520M-A PRO due to PCIe limits. Should I update the BIOS?

Trying to run the Silent Hill 2 remake on an A520M is like trying to race a tractor on an F1 track—it's just a hardware mismatch. In the heavy fog scenes, the PCIe 3.0 bandwidth limit and CPU I/O latency caused frame times to swing wildly between 16ms and 45ms, making the game feel like a slideshow. I tried enabling Windows Game Mode, but that just made my background apps lag and did nothing for the game—a complete waste of time. I eventually updated the BIOS to the latest version and manually forced the PCIe slot to Gen3 instead of 'Auto,' then switched my power plan to 'Ultimate Performance.' RTSS showed the frame spikes dropped from 45ms to 28ms; it's not perfect, but the perceived smoothness improved by about 30%. The BIOS update wiped my XMP settings, so I had to set those up again. CPU temps hit 72-78℃ and the VRM was roasting at 85-92℃. I backed up the BIOS config once it was stable, with the VRM still holding at 85-92℃.