The vae is already built-in and does not need to be downloaded separately.

It is recommended to sample DPM++ 2M Karras with a step count of 25 or more.

For high-definition restoration, it is recommended to use R-ESRGAN 4x+ with a redraw amplitude of 0.5- and a step count of 20-25.

Recommended output dimensions are 768x1024, 1024x1024, 1024x1536.

When writing keyword prompts, it is recommended to be more detailed.