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ControlNet Depth yields 0–35% GPU savings only when replacing multi-pass ControlNet stacks, not 52%. Single RGB img2img passes incur 8–15% overhead instead. Independent technical note mirroring the canonical version: https://lionvaplus.com/blog/ai-virtual-staging-costs-controlnet-depth-depth-conditioning-cuts-gpu-52-adopt.php Sources consulted: https://www.bluusun.com/
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