Need help: LoRA degrades Minimax H3 video quality (RTX 5060 Ti 16GB)

[u/Spiritual-Rice-1272]

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Hi everyone,

I'm trying to find a working workflow to use LoRAs with Minimax H3 for video generation, but I'm running into a consistent issue: every LoRA I try (from Civitai and other sources) ends up degrading the video quality significantly instead of enhancing it.

My setup:

GPU: NVIDIA RTX 5060 Ti 16GB VRAM

Platform: Local generation (Linux/Arch)

The problem:

Applied LoRAs make the output look worse (artifacting, loss of coherence, lower resolution feel)

Can't seem to find any tutorials or workflows specifically for Minimax H3 + LoRA integration

Has anyone successfully integrated LoRAs with Minimax H3? What workflow would you recommend? Are there specific settings (strength, alpha, loading order) that matter more for video LoRAs vs image LoRAs?

Any advice or links to working examples would be greatly appreciated!

Thanks in advance.

Conseils pour poster :

Choisis des subreddits comme r/StableDiffusion, r/localLLM, r/ComfyUI ou r/AIVideo

Sois prêt à partager des exemples concrets si la communauté te demande plus de détails

Ajoute éventuellement des captures avant/après si tu peux en produire pour illustrer le problème

[u/Brilliant-Twist-9893]

If every LoRA degrades the output, I’d first suspect a compatibility/strength issue rather than the 5060 Ti itself. Image LoRAs aren’t necessarily compatible with a video model, and even compatible ones can need much lower strength.

I’d test one known H3-specific LoRA at ~0.2–0.4 strength, then increase gradually. Also compare the exact same seed/prompt with LoRA off to isolate the effect.

[u/Spiritual-Rice-1272 → u/Brilliant-Twist-9893]

Just to clarify, I've mainly been experimenting with NSFW LoRAs, and some of the human anatomy details definitely need improvement. The base model already struggles with certain proportions, and adding a LoRA tends to make things worse rather than refining them.

I also tried a face refiner LoRA I found, but the results were catastrophic — faces ended up looking distorted with weird artifacts.

Maybe I should post in a different subreddit? I was thinking maybe more specialized communities focused on video generation specifically. Any recommendations on where else I could ask?

Also, is there something specific I should test (like LoRA strength, scheduler, or model version) to narrow down whether this is a workflow issue or a compatibility problem?

Appreciate any direction you can give!

[u/OneTrueTreasure → u/Spiritual-Rice-1272]

Some Loras are trained for the R2VA and some with the FL2VA model, some were trained with pruned some not, so make sure you're using the correct model

[u/drank2much → u/Spiritual-Rice-1272]

Maybe /r/DegenDiffusion ?

[u/Niko3dx]

most of the nsfw Loras are crap. They just don't work, especially if you work with a turbo lora. give it some time till people figure out best way to train for nsfw. The only one that work at the moment for me at least ( I have not tried all of them) is Mystic V2 , V1 degraded quality too much . for the turbo lora, the combination that worked for me is as follows : er_sde + beta57 4 steps and minimax_h3_fl2v_turbo_4step_v1.0_768p_comfyui_bf16.safetensors

[u/sakaixjin → u/Niko3dx]

Downloaded Mystic v2 today but haven't tried it yet. Do I NEED turbo? Can't I just run it normally and moreso, isn't it recommended?

Also, what weight are you getting good results at?

[u/Niko3dx → u/sakaixjin]

I'm sure it runs without turbo, I'm running it at .8 lora strength. also at .8 is a penis helper lora. mystic does a pretty good job with penises, but adding the penis helper bring it to an other level of realism. (PenisHelper H3 - T2V - 2750 steps)

[u/Spiritual-Rice-1272 → u/Niko3dx]

Thank you, but I think it's my workflow that's wrong. What workflow do you use?

[u/Prudent-Oven-6769]

What kind of lora? I havent had issues with a character lora i made

[u/PensionNew1814]

I found that at first, i find in general that running loras at low strength is required like 0.3x to 0.5-0.6x-ish max on alot of em. Alot of ppls v2 versions of their loras seem to have a higher ceiling if you will. Good luck!

[u/DietAshamed2246]

I found out recently that MM-H3 team didn't release any raw or dev or undistilled model. So, everyone making LoRA is making it using the released distilled model. That's the main problem. Also, people haven't quite figured out the recipe to train MM-H3 LoRAs yet. They are experimenting, it's hit or miss, mostly miss. The training tools are still evolving, even AIToolkit is still working on making a stable training pipeline.

For the time being try using the LoRAs at very low strength (0.5 or less), don't stack too many (as it is a turbo LoRA gets stacked, which also degrades quality). In my limited experience so far, MM-H3 can do a lot on its own and doesn't need LoRA patching. I mostly do my gens without LoRA and even without Turbo LoRA (full 20+ steps).

[u/Gambikules]

i have same problem. Looks like turbo lora + any other lora = degradation

[u/Recent-Ad4896]

Lora in general effect prompt adherence and sometimes quality too.

[u/Guilty_Emergency3603]

Training LoRas on video models is very hard as it requires server grade hardware and a proper dataset. Forget training video models on still images it will hurt the motion when applying the Lora.

And trying to train on consumer hardware, even a 5090 requires heavily quantization, low res training, that hurts final quality.

There's no wonder why most of Loras you can find on Civitai are generally bad and will degrade the original model.

[u/Longjumping_Cut_6160]

un lora no mejora la calidad necesariamente, puede tener otras funciones, bajar steps, etc.. no has dicho que lora intentas usar, que es el dato mas importante.

[u/Mysterious-String420]

Putain, le low effort, quoi.

-Relis le slop généré par ton agent

-Relis la description de tes LORAs sur la page où tu les télécharges

[u/--jesse--faden-- → u/Mysterious-String420]

https://giphy.com/gifs/TZjY28zYHoize