Default SD 1.5: Use the “DPM++ SDE Karras” or “DPM++ 2M Karras” sampler with only 20 steps for better quality. “DPM++ SDE Karras” has better quality but is slow.
Default SD 1.5: Use the CFG scale between 5 and 9. CFG scale at 5 is recommended. Stable Diffusion default value is 7. For the cartoon model, CFG in 8-9 has had better results.
SD 1.5 LCM: Use the “Euler a” or “LCM” sampler with only 8 steps for better quality.
SD 1.5 LCM: Use the CFG scale between 1 and 2. CFG scale at 2 is recommended.
LCM with DPM++ SDE Karras: Sampling steps 8, Hires. Fix enabled, upscaler nearest, Hires steps 2, hires. denoise 0.45, upscale by 1.05, cfg scale 1.5.
LCM with DPM++ 2M Karras: Sampling steps 8, Hires. Fix enabled, upscaler nearest, Hires steps 2, hires. denoise 0.55, upscale by 1.05, cfg scale 1.5.
Resolution between 512 and 768 using “Hires. Fix” or other form of upscaling.
If you use “Hires. Fix”, use “Upscale by” with the value 1.5 with denoising at 0.6.
Tips for a better prompt:
Recomendations for improvement on performance:
Use Token Merging Ratio 0.5 on optimization settings.
If you have a GPU with low VRAM, use –medvram on command line arguments (webui-user.bat on Windows).
Recommended negative prompts to improve human images: amputee, deformed body, long neck, extra fingers, bad body proportions, mutated hands, mutilated, mutation, ugly, fused fingers, malformed limbs, extra heads, disfigured,