How to fix long loading black screens in Destiny 2 caused by northbridge overheating on Biostar A320MH PRO?

Loading levels in Destiny 2 resulted in long black screens due to northbridge overheating. Lowering graphics settings didn't help. I used the GamePP Hardware Sensor Page to change the northbridge fan curve to a linear smooth rise and locked it at 1800 RPM. After adjustment, AIDA64 showed temperatures stable at 65-70℃, and CrystalDiskMark confirmed PCIe bandwidth recovered to 8GT/s. This fixed the lag.