Minimax H3 & LTX 2.5 Upscaler Workflows Benchmarks

Support_Marmoset · reddit · 2026-08-15

Shared optimal upscaling and refining workflows (ComfyUI) for Minimax H3 video outputs, available on GitHub. The comparison shows the H3 dual-sampler workflow offers superior quality but takes longer (45 mins for 8s video), while the tuned LTX 2.5 workflow achieves acceptable quality in 18 mins and supports 3MP resolution. Tested on a 12GB VRAM setup.

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