Krea2 in ComfyUI randomly outputs black or broken images on dual RX 7900 XTX setup
Hiranus · reddit · 2026-09-14
A Reddit user reports inconsistent behavior when generating images with the Krea2 Turbo template in ComfyUI: some runs produce the intended epic fantasy scene, while others yield a broken render or a fully black image.
They disabled prompt enhance and set LLM max tokens to 32768. Hardware is 2x XFX Radeon RX 7900 XTX on a 1500W Corsair PSU, already validated in games, OCCT, and local chat LLMs, so hardware or power delivery seems unlikely to be the culprit. As a newcomer to ComfyUI they suspect a misconfiguration and are asking the community for help; the post includes the full long prompt, useful reference for anyone running ComfyUI on dual AMD GPUs.
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