>>35703424Extras tab
you can upscale with StableDiffusion with LDSR, but it takes long and your hardware might not run the high resolution
you also have other non-stablediffusion ai upscalers there like ESRGAN that work with anything
It's all preference but I get good anime results with ESRGAN_4x and R-ESRGAN General 4xV3 and R-ESRGAN 4x+ Anime6B
you can enable more upscalers in the settings