Also, if it helps, creating a new save file in SSBB has the same problem, FPS drops to 1-5 for around two minutes until the collect.vff file in User\Wii\title\00010000\52534245\data folder get around 14MB in size
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 32 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)