🅛🅣🅧 STG Advanced Presets

STG - Spatio-Temporal Guidance - is one of the levers that makes LTX output look coherent instead of soupy, but tuning it by hand across the denoising schedule is fiddly and easy to get wrong. This node is the shortcut: pick a preset that matches your model, and it hands you a bundle of sensible STG-plus-CFG settings so you don't have to hand-tune anything.

How it works

STG works by running a deliberately degraded version of the model alongside the real one and steering away from the degraded prediction, which sharpens structure and motion. The catch is that the right amount of STG changes with the model and even across the diffusion steps - the advanced guider was built to apply different CFG and STG parameters at various steps. That flexibility is powerful and a pain to configure. So this node ships known-good configurations as named presets. It outputs a single STG_ADVANCED_PRESET that plugs into the advanced STG guider; think of it as the settings pack, not the guidance itself.

The one input that matters

There's exactly one control, preset, and it's a dropdown:

• 13b Balanced (the default) - the safe general-purpose choice for the 13B model.
• 13b Dynamic - leans toward more motion and energy.
• 13b Upscale - tuned for the upscale stage of a two-stage pipeline.
• 13b Distilled - matched to the distilled 13B, which needs a gentler hand.
• 2b - for the smaller, older 2B checkpoints.
• Custom - hands control back to you for manual STG tuning.

The rule of thumb: pick the preset that names your model. Running a distilled checkpoint on the Dynamic preset is asking for trouble.

Installing it

• ComfyUI Manager - search LTXVideo, install, restart.
• Manual - cd ComfyUI/custom_nodes && git clone https://github.com/Lightricks/ComfyUI-LTXVideo, then restart.

Common issues

Hair and skin look exaggerated and unnatural. That's over-applied STG, and it's the single most common STG complaint - one user described it producing "an exaggerated and unnatural appearance." Step down to 13b Balanced, or drop from Balanced toward the distilled preset. Less is usually more here.

Preset mismatch. These are model-specific. If you're on a 2B checkpoint and using a 13B preset (or vice versa), the guidance strength is tuned for a different model and the output suffers. Match the preset name to what you're actually running.

You need finer control than the presets give. Switch to Custom and tune the STG parameters directly - the presets are a starting point, not a ceiling. Most people never need to, but the door's open.