FAST H3 V2 vs 3-Step LoRA: community tests weigh speed and quality in H3 video workflows
Strange_Limit_9595 · reddit · 2026-09-18
The author compares combinations of H3 video generation optimizations (FAST H3 V2, 3-Step LoRA, Sparse, CK, int8) for image-to-video, noting updates now ship faster than anyone can test.
Key findings:
- Quality: CK + FAST H3 V2 (8 steps, faster) ≈ Sparse + CK + int8 + 4-8 step LoRAs
- Quality: CK + 3-Step LoRA (faster) ≈ Sparse + CK + 4-8 step LoRAs
- Sparse + CK + 3-Step LoRA is fastest but introduces artifacts more often than Sparse + CK + int8 + 4-8 step LoRAs at equal quality
- Sparse + CK + FAST H3 V2 still being tested
The author also tags workflow developers asking whether nodes need adjustments.
More from Multimodal
- Free course covers the 4 hard problems of production generative media agents — Al_Grigor · 2026-11-04
- PixelBench: testing multimodal models pixel-by-pixel instead of with QA — bdsqlsz · 2026-11-04
- Kitten-TTS 2 offers free voice cloning on laptops, no GPU needed — solyarisoftware · 2026-11-04
- "We'll Take Your RAM": a fully local-hardware cyberpunk meme from 2030 San Francisco — Wonderful-Yak-3348 · 2026-11-04
- Openfilm: open-source AI video agent turns coding agents into video makers — solyarisoftware · 2026-11-04
- Microsoft reopens VibeVoice: 10-second voice cloning, 90-minute local TTS — solyarisoftware · 2026-11-04