Does the Kioxia EXCERIA PLUS G4 overheat and cause stuttering in Metaphor: ReFantazio complex scenes?

Watching my frame rate plummet from 120 down to 40 during scene transitions gave me genuine anxiety; it totally breaks the immersion in a massive RPG. The Kioxia EXCERIA PLUS G4 has insane PCIe 5.0 speeds, but the controller hits 85-92℃ under load, triggering a brutal thermal throttle that drops read speeds from 10,000MB/s to around 2,000MB/s. I tried capping the PCIe slot to 4.0 in the BIOS, which lowered temps by 12℃ but increased load times by 30%—not a trade-off I was willing to make. I eventually swapped to an active heatsink with a dedicated fan and forced the Windows write cache to flush. HWInfo shows the controller is now pinned between 62-68℃, with speeds staying steady at 9500-10200MB/s. The fan was annoyingly loud at first, but I dialed the curve down to 45% load to find the sweet spot. 4K random writes are now a solid 170-200MB/s, and the input lag is completely gone.