The only HD in-battle effects we have in the pack are Monado effects. So in the Monado folder in SX4E01, you could delete the special effects looking textures. (Basically everything besides the two red Monado looking textures, including the "Cutscene" folder)
I don't think that will help the problem though. But it's worth a shot.
I don't think that will help the problem though. But it's worth a shot.