'texture-power-2' it's a different setting, you have to add it in manually. It should be hardcoded in so the engine won't resize textures to the next power of two, but maybe for some reason it's not working as it should. If it's not that then probably something wrong with the shaders I've written or how your gpu drivers compile them. You can add 'show-buffers = 1' to see the individual filter buffers, but that won't fix the problem. I'll add options to disable some or all of the filters once the embargo on submitting changes lifts - for now I don't think there's much I can do. Sorry.