Krea 2 Workflow v1.4 | Clean, Modular & Beginner-Friendly (with SeedVR2 Upscaler) — v1.4.3 — v1.4.5

1.4.5 Added image ratio cheat sheet.

🚀 What's New in Version 1.4 (v1.4.3 & v1.4.4 Patch)

Version 1.4.3 introduced a major structural overhaul focused on decluttering the canvas, integrating high-res upscaling, and adding built-in documentation directly inside ComfyUI.

🔧 v1.4.4 Patch Update

• Updated On-Canvas Manager Instructions: Fixed and simplified the embedded Manager installation guide for ComfyUI Portable users. Clarified the rule for applying updates:

• Custom Nodes / Code: Requires a Full ComfyUI Restart + Browser Refresh F5 ).

• Models / LoRAs: Requires only a Menu Refresh (no restart needed).

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🌟 Major Features Introduced in v1.4.3

🧹 1. Complete "Zero-Spaghetti" Subgraph Refactoring

• Subgraph Architecture: Consolidated the main workflow blocks (Model Pipeline, Prompt/KSampler, and SeedVR2 Engine) into clean ComfyUI Subgraphs.

• Cable Cleanup: Eliminated hundreds of overlapping wire connections across the board using KJNodes Set/Get routing for a sleek, modern visual layout.

⚡ 2. Integrated SeedVR2 Upscaler Pipeline

• Built-in SeedVR2 Engine: Added a full SeedVR2 upscaler setup natively in the workflow.

• Instant ON / OFF Toggle: Easily toggle high-res upscaling on or off using fast group bypass switches (rgthree) without touching any wires.

📚 3. On-Canvas Cheat Sheets & Guides

Embedded floating Markdown documentation blocks directly onto the workspace so you never have to guess settings:

• ComfyUI Portable Installation Guide: Updated step-by-step instructions for installing missing nodes via ComfyUI Manager.

• Model Panel Guide: Clear breakdown of model types, text encoders, and VAE choices.

• LoRA Guide: Rules for stacking multiple LoRAs effectively without quality degradation.

• SeedVR2 Upscaler Cheat Sheet: Parameter guide explaining tile sizes, attention modes, and offloading.

• Prompt & KSampler Settings: Explanations for CFG, schedulers, denoise levels, and batch sizes.

🏎️ 4. Hardware Compatibility & Performance Updates

• NVIDIA Blackwell (RTX 50-Series) Fix: Included dedicated BlackwellAttentionFix logic with simple bypass instructions for 50-series card users.

• LoRA Stacking: Integrated rgthree Power Lora Loader for hassle-free LoRA management.

• Optimized Krea 2 Defaults: Pre-configured for krea2_turbo_fp8_scaled and Krea2-Engineer-V1-bf16 .

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💡 Upgrading from an older version?

Make sure to run ComfyUI Manager ➔ Install Missing Custom Nodes after loading the workflow to auto-grab the required custom nodes (such as seedvr2_videoupscaler and rgthree-comfy ). Remember to restart ComfyUI and refresh your browser F5 ) after installing new custom nodes!