ComfyUI 0.34.3 runs MiniMax H3 4x slower with hostbuf_grow errors, user reports
IRLMainCharacter · reddit · 2026-09-05
A Reddit user reports that running MiniMax H3 bf16 models on ComfyUI 0.34.3 spams the console with hostbufgrow errors (requesting 55GB beyond the reserved host buffer), matching GitHub issue #15575.
Outputs look correct but generation takes about 4x longer than a few weeks ago. The user suspects a regression after version 0.30.2 and is considering rolling back, asking the community which versions others are running and whether they see the same performance issues.
More from Multimodal
- Reddit user compares two MiniMax H3 Turbo LoRAs for video generation — No-Bee-231 · 2026-09-05
- MiniMax H3 workflow: REF2VA visuals + FL2VA audio + LightX2V speed, 198s on RTX 5090 — gabxav · 2026-09-05
- AI short film "Ishiro - The Last Blade" shared on Reddit — Nervous-Barnacle-888 · 2026-09-05
- Dev calls for a MiniMax H3 finetune that fills speech gaps with human filler words — cocktailpeanut · 2026-09-05
- Nvidia DLSS 5 frame interpolation discussed in Stable Diffusion community — KonoTheSavage1 · 2026-09-05
- Perceptron's Multilook API Prefills Video Context Once, Cuts Input Cost to 32% at 16 Prompts — AkshatS07 · 2026-09-05