>>2771195Download a VAE, like the one here
>>2771114 or
>>2771125Enable it in your SD settings, do not use Euler a or any of the alpha/legacy samplers. Do not use any of the Latent upscalers either as those can add unnecessary noise. Use the R-ESRGAN 4x+ Anime6B upscaler instead with at least 5 steps.
The difference you'll see will be like this pic, which is still the AOM3 model but much more crisp and color saturated.