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Changing the prompt leads to a memory problem

LTX-2.3 r/StableDiffusion · Mar 23, 2026, 12:00 a.m.

User reports that changing prompts in an LTX 2.3 T2V setup can trigger VAEDecodeTiled out-of-memory errors despite the default prompt working.

This r/StableDiffusion thread captures a practical LTX-2.x runtime behavior: prompt edits in an otherwise stable LTX 2.3 workflow can push decode-time memory use over the edge, making VRAM budgeting and decode settings as important as model choice.

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