我的配置是CPU：R7 9700X，内存：DDR5-6000 2x24GB，显卡：R9700；系统Windows 11。

ComfyUI 版本：0.33.1 & ROCm 7.14 & PyTorch 2.12.0，添加以下启动项后：

--use-ck-attention

--enable-dynamic-vram

生成时间为 180.02秒（8/8 [01:56<00:00, 14.58s/it] ），而不添加此启动项则为 284.44秒（8/8 [03:14<00:00, 24.28s/it]）秒，约为1.6倍，效果显著。

我测试的视频随机种子为 43 ；视频比例为 16：9；视频长度为 8秒；0.4MP的清晰度；

这是我的测试提示词：

integrated_multimodal_description: [Shot 1] Live-action, cinematic, dreamlike photorealism. At blue hour beneath a deep indigo sky, a young East Asian woman with long black hair walks slowly through a vast field of delicate white flowers covered by ankle-high silver mist. She wears a flowing translucent white chiffon dress with subtle pearl embroidery. A low-angle tracking shot follows behind her with smooth, gentle movement as her hair, sleeves, and layered skirt drift naturally in the soft night breeze. Cool moonlight creates realistic highlights along the fabric and flower petals, while faint warm light glows beneath the mist. A luminous blue butterfly enters from the right, circles once around her shoulder, and settles lightly on her extended fingertip. She pauses and turns into a graceful three-quarter profile, watching it with a subtle, peaceful expression. The camera begins a slow arc around her with small amplitude. The butterfly dissolves into hundreds of tiny blue-white particles that flow from her hand like sparkling dust. A circular wave of light travels outward through the field, causing the flowers to illuminate one after another in a smooth expanding pattern. The camera gently cranes upward and moves past her, revealing a perfectly still mirror-like lake beyond the flowers and an enormous luminous full moon resting close to the horizon. The moon, stars, glowing flower field, and drifting particles reflect naturally in the water. The final frame holds briefly on the woman standing alone before the moonlit lake as several glowing particles float upward. Realistic human anatomy, consistent facial identity, physically accurate fabric and hair movement, volumetric moonlight, shallow depth of field, subtle lens bloom, fine film grain, high dynamic range, elegant restrained color grading, no cuts, no dialogue, no visible text.

overall_soundscape: A soft night breeze moves through the flowers and gently rustles the woman's chiffon dress. Her quiet footsteps brush against the grass, accompanied by a delicate crystalline shimmer when the butterfly dissolves and the flowers begin to glow.

non_diegetic_music: Sparse felt-piano notes at a slow tempo, joined by a sustained ethereal string pad and very light glass harmonics. The music gradually rises as the flowers illuminate, then resolves into a soft sustained note over the final frame.

另外也可以通过安装节点来进一步加速（不过我嫌麻烦没有折腾），节点链接：

https://github.com/xmarre/ComfyUI-Spectrum-MiniMax-H3

Reddit原帖：

https://www.reddit.com/r/comfyui/comments/1vo9zjj/comfyui_now_supports_ck_attention_and_dynamic/

另外还有个利用Ltx2.5为MiniMax H3 放大的放帖子我觉得也不错，所以也一并搬来了，但我没有尝试：

https://www.reddit.com/r/StableDiffusion/comments/1vo5vnz/redetail_upscale_minimax_h3_renders_with_the/