ComfyUI interface showing AI image generation workflow with parameter adjustments and before/after quality comparison
Creator: Jack
AI Image

How To Improve AI Image Generation Quality Using ComfyUI

Promptus
8 min
Wiki 128
promptus ai video generator

How To Improve AI Image Generation Quality Using ComfyUI In 2025

AI images on Promptus can be dramatically enhanced with just a few smart tweaks. This guide will walk you through how to:

  • ✅ Fix distorted outputs
  • ✅ Enhance detail and realism
  • ✅ Optimize ComfyUI workflows
  • ✅ Achieve professional-quality results

Whether you're working on fantasy artwork or photorealistic portraits, these tips will level up your generations instantly. 💡

🌐 Understanding ComfyUI Through Promptus Studio Comfy

Before diving into optimization, let’s understand the foundation.

Promptus Studio Comfy (PSC) is a browser-based, cloud-powered platform built on the open-source ComfyUI framework.

✨ Features include:

  • CosyFlows (a no-code visual interface)
  • Real-time collaboration
  • Built-in models: Gemini Flash, HiDream, Hunyuan3D
  • Integration with Discord
  • Workflow publishing 🚀

It supports multi-modal generation (text, image, video) and uses distributed GPU compute for lightning-fast rendering. 🖥️⚡

🧪 Starting With Default Settings

Many users begin with default ComfyUI settings… and feel underwhelmed.

👎 What you might see:

  • Distorted faces
  • Unclear clothing
  • Poor background quality

🧪 Test Prompt: "God of Flowers fantasy setting" using SDXL 0.9

Result? Disjointed and lacking polish. But don’t worry — we’ll fix that!

Step 1: Upgrade Your Image Resolution 🔧

Change resolution from 512×512 → 1024×1024. This one step can improve quality by up to 90%. 📈

✅ Why it works:

SDXL models were trained at 1024×1024 — so you're using them at full potential.

💥 You'll see:

  • Crisp facial details
  • Dynamic, active backgrounds
  • Better clothing/accessory rendering
  • More balanced compositions

🛠️ Step 2: Use a Better Sampler

Switch from Euler to dpmpp_2s_ancestral.

🔍 This improves:

  • Hand + face accuracy 🤲
  • Sharpness and detail ✨
  • Color and lighting consistency
  • Overall polish

🧠 Tip: Try different samplers for different art styles or genres!

✨ Step 3: Add the Refiner Model

Stability AI's Refiner takes your image from good to great.

🧙 What it does:

  • Adds texture, lighting, and shadow depth
  • Refines facial proportions and expressions
  • Boosts vibrance and realism
  • Works best for fantasy and photoreal content

Use it after your base generation to give it a final “professional touch.” 🎨

Workflow Integration in PSC 🧰

All these tweaks are easily integrated in Promptus Studio Comfy:

✅ Use CosyFlows to visually adjust parameters
✅ No need for scripting or deep technical setup
✅ Drag-and-drop interface makes everything intuitive

🌐 Sign up at Promptus.ai

Choose Web or App version — your choice! 🚀

Results Comparison 🔍

Aspect Default Settings 😐 Optimized Settings 🔥
Faces Inconsistent, distorted Clean, proportional
Background Flat, blurry Rich, dynamic
Textures Unclear, patchy Detailed, sharp
Lighting Flat Cinematic & vibrant


Genre-Specific Optimizations 🧙

🧚 Fantasy Art:

  • Enhanced magic effects
  • Mystical lighting
  • Refined creature and armor detail
  • Perfect for RPG & lore-themed content

🧍 Photorealistic Portraits:

  • Natural skin tones
  • Accurate eye + mouth details
  • Contextual lighting
  • Ideal for headshots and commercial projects

Hardware Considerations 💻

High-res and refined outputs do need more VRAM.
If your system is lower spec, you may:

  • Face longer render times ⏱️
  • Be limited in output size

Solution: Promptus offers cloud-based GPU compute — run advanced workflows even on basic machines. ☁️💪

Getting Started With Promptus 🚀

  1. Go to Promptus.ai
  2. Choose Promptus Web (no install) or Promptus App (desktop power)
  3. Start building stunning AI images with zero friction 💻

Final Takeaway 🏁

Improving your AI image generation doesn’t require:

  • ⚠️ Advanced code
  • 💸 Expensive tools
  • 🧠 Technical expertise

It just takes 3 smart changes:

  1. 📐 Resolution → 1024×1024
  2. 🌀 Samplerdpmpp_2s_ancestral
  3. Refiner → for cinematic polish

Combine these with Promptus Studio Comfy and you’ve got a powerful, scalable, creative engine at your fingertips. 🎯

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