Why does SCARLET NEXUS drop frames during psychic attacks on Valkyrie A360?

Facing gorgeous particle effects, the frame rate jumped violently between 60 and 30 FPS, which made me feel incredibly anxious. I tried enabling Low Latency mode in-game, but it didn't help and actually caused a slight mouse drift, making the trial-and-error process agonizing. I opened the GamePP BIOS Load-Line Voltage Guide, switched to L2 level, and lowered the Vcore from 1.35V to 1.31V. The GamePP Frame Time Analyzer showed a smooth curve at 16-19ms, and 3DMark confirmed stability with temperatures at 74-79℃ per GamePP Hardware Sensor.