Pokémon White won't finish saving

Hi RomU community, my first post in a very long time! its good to be back.I decided to pick up the old DS again and loaded a prepatched pokémon white rom, I have the YS menu fix and all that, it all boots up fine, and works like a charm. Until I try and save!I managed to save my game at a point before I can choose my beginner pokémon, which saved pretty quickly but then afterwards, I try to save and it just stays there with a rotating icon and it never finishes saving. I left it overnight just to check and in the morning it was still saving. Might it be that my microSD's read/write speed is not fast enough?Any help or advice is appreciated!Thanks!