H3 Model Generates Blocky and Distorted Images, Users Debug Node Settings
FastIce8391 · reddit · 2026-08-06
A Reddit user reported that while using the H3 image generation model, their outputs suffer from heavy blockiness, low quality, and distortion, even at 1 MP resolution with an RTX upscaler.
The user noted a stark contrast between their results and the high-quality images shared by others in the community using the same model at lower resolutions (e.g., 0.4 MP). They are currently investigating whether specific node configurations like Sage Attention and Spectrum are causing the artifacts and are seeking advice on how to fix the issue.
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