Texture Replacement

[DinJerr]

If you're using replaced textures, might be worth disabling texture filtering entirely, as it's meant to upscale original textures, not to upscale and re-dump your replacement textures over and over, you know?

I think you're talking about texture upscaling here, since texture filtering is a different thing altogether. Anyway, AFAIK the modded textures do not get upscaled by the emulator, only the original ones are. At least in my experience anyway.