With Krita + krita-ai-diffusion + LCM, you can generate, modify and upscale images using stunning fast Stable Diffusion LCM.
For those who want to try:
1. Get a high end computer with at least 8G GRAM and RTX, or Apple Silicon M1+.
2. Install Krita.
3. Install krita-ai-diffusion.
4. Install LCM loras.
All of the component above are open source and free to use.