Make sure you are aware on the usage instructions of LORA
VAE: vae-ft-mse-840000-ema-pruned (For realistic models)
Sampler: DPM++ SDE Karras (Recommended for best quality, you may try other samplers)
Steps: 20 to 35
Clipskip: 1 or 2
Upscaler : Latent (bicubic antialiased)
CFG Scale : 5 to 9
LORA weight for txt2img: anywhere between 0.2 to 0.7 are recommended
Denoise strength for img2img: 0.4 to 0.7