Qwen 2.1 image quality issue — noisy and muddy results
Hey everyone! Hope you're doing well.
I've been experimenting with Qwen 2.1 and I'm having a bit of trouble with image quality. Whenever I use this prompt, the results tend to come out quite noisy, muddy, and a little overprocessed. I'm trying to achieve a cleaner, more detailed, photorealistic look.
Does anyone have any idea what might be causing this, or which settings/prompt changes could help improve the result?
I'd really appreciate any tips or suggestions. Thanks in advance!
Prompt: A colossal, otherworldly biomechanical sea creature rising dramatically from rain-soaked, muddy ground covered with delicate wildflowers during an intense thunderstorm. Its exterior is a textured dark teal-green metallic shell, reinforced with intricate rivets, layered armor plates, and design elements inspired by an ancient deep-sea vessel. Multiple vivid neon-green luminous sensors and circular glowing apertures are integrated into its head and limbs, casting an eerie emerald illumination across the surrounding wet ground.The creature's enormous open mouth reveals rows of rugged ivory-colored teeth as it unleashes a powerful roar. One gigantic armored limb extends toward the foreground, its heavy articulated claws pressing into the soft earth and scattering pink and yellow flowers. Torrential rain streams through flashes of lightning, reflecting across the creature's wet metallic surface.Mud droplets, flower petals, mist, and environmental debris fill the air around its movement. In the distance, a dark mountainous landscape appears as jagged silhouettes beneath a turbulent storm-filled sky. Low-angle wide composition, immense sense of scale, cinematic perspective, hyper-realistic materials and environmental textures, dramatic volumetric lighting, atmospheric depth, epic dark-fantasy creature design, photorealistic detail, high contrast, dynamic storm atmosphere.
I get clean results in ComfyUI with these settings: INT8 file, TextEncodeQwenImage21 node,
1024x1024, 25 steps, CFG 1, euler / simple.
Muddy, overprocessed images can come from a CFG that is too high or a different scheduler.
If you use the new Turbo release, people in the Comfy-Org repo say it needs custom sigmas:
https://huggingface.co/Comfy-Org/Qwen-Image-2.1/discussions/22
My tested workflow is free (about 17 s per image on a 16 GB card): https://vramready.com/workflows/