My loading bar hangs at 80% in Granblue Fantasy: Relink with Corsair 32GB DDR5 6400, do I need to fix XMP?

Having the loading bar freeze at 80% every single time I entered a dungeon completely killed the game's pacing. I found that my Corsair Vengeance RGB DDR5 6400 was fluctuating by 200-300MHz in Auto mode, pushing resource response times up to 120-180ms. I tried updating the drivers, but it only shaved off one second—basically useless. I ended up flashing the latest BIOS and manually locking the XMP profile at 6400MHz, while tweaking the SoC voltage to 1.25V. CrystalDiskMark showed throughput jumping from a shaky 51GB/s to a solid 56-60GB/s, and load times dropped from 15 seconds to 9. I actually messed up the BIOS flash once because of the USB format, but reformatting to FAT32 did the trick. Temps are around 55-62℃. It's finally stable.