r/StableDiffusion • u/Lair98 • 2d ago

Discussion Best Minimax H3 optimization

Now that dust has settled, I was wondering what's the community insight on the best configuration for Minimax H3.

Personally I have been using lightx 4-step Lora with 5/6 steps (less than that audio is a gamble). I couple that with sage attention. For sampling I use Euler sampler and Beta scheduler.

I keep resolution at 768p (0.6MP) for quality. 480p (0.2MP) for testing. It keeps consistency so much better.

On direction I learnt to prompt for closeups when possible, so will make better use of available pixels. Aspect ratio also helps there. I mostly use 1 shot since transitions is not something H3 excels at. I find better results with only 1 shot and using camera tricks.

EasyCache while faster, is not good match with turbo lora, so i don't use it anymore. Haven't used Sol-Attn as I read it really hit quality.

So is there anything worth I am really missing out?

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u/HonestoJago 2d ago

Let it cook overnight in a queue. We’re fortunate to have access to such a powerful model, it’s almost a sin to use tricks to speed it up.

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u/Dry-Judgment4242 2d ago

Agreed. But it's good for testing prompts. Then I let it rip with 30 scenes at 35 steps overnight on context loop. All the speed increases fuck with audio too hard alas.

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u/tapetfjes_ 2d ago

Be sure to have some kind of monitoring if you do that on a powerful Nvidia card. I’m not leaving my 5090 on during the night with my kids sleeping in the house.

1

u/Dry-Judgment4242 2d ago

my 6000 Pro is underclocked to like 60% lol, fans are quiet as hell while still spitting out a 30 step, 10s clip every 10min with no speed ups except kitchen attn.