comfyui-workflows/optimized/notes/ltx.md

LTX Notes

Current default assumptions

• Low-VRAM practicality matters more than graph sophistication.
• The first question is whether LTX 2.3 is usable at all on Chris's 3070.

Strong current source workflows

• models/ltx/ltx23-i2v-t2v-simple-single-pass/
• models/ltx/ltx23-t2v-simple-single-pass/
• models/ltx/ltx23-first-last-frame/
• models/ltx/ltx23-character-sheet-best-face-id/

Strong current heuristics

• Start with simple single-pass before trying larger consistency graphs.
• Prefer split-model and extracted-model routes when the source pack says they are easier locally.
• Treat first-last-frame and character-sheet workflows as second-wave tests, not the baseline.

Current weak areas

• No real proof yet for what is genuinely practical on Chris's box.
• Community packs bundle lots of helper nodes, which raises import fragility.

Best current optimization direction

• Keep optimized/image-to-video/ltx23-3070-simple-master/ as the first LTX default.
• Only promote first-last-frame or character-sheet variants after the simple master proves viable.

What needs Monday proof

• whether the simple master loads and runs at all on the 3070
• whether preview/decode or the core model path is the real bottleneck
• whether LTX has any realistic chance of displacing MiniMax for local use