OCS MultiParam

If you've already met OCS Param, this is the same node with five slots instead of one. OCS MultiParam lets you bundle several custom parameters - a custom noise generator and a VAE and a merge sampler - into a single OCS_PARAMS output instead of daisy-chaining five OCS Param nodes. It's the tidier option, and for that reason alone it's usually the better first choice.

What it is

A parameter definition node with five parallel key/value pairs. Each key_N selects a parameter type, and the matching value_opt_N carries the actual object. All five compile into one OCS_PARAMS stream that you feed into the params_opt input of an OCS Sampler, OCS Group, or OCS Substeps. The receiving node merges everything into its parameter bag.

The inputs that matter

• key_1 … key_5 (required) - the parameter types. Same enum as OCS Param: custom_noise, restart_custom_noise, merge_sampler, sampler, vae, upscale_model, or empty (leave a slot unused).
• value_opt_1 … value_opt_5 (optional) - the actual wired objects. Each accepts SIGMAS, OCS_NOISE, SONAR_CUSTOM_NOISE, SAMPLER, VAE, IMAGE, or UPSCALE_MODEL. As with OCS Param, there's no type checking until you execute - connect the wrong kind of thing and the error shows up at runtime.
• params_opt (optional) - chain other Param nodes here for even more parameters.
• parameters (optional) - YAML/JSON text block. Here rename works per-index: instead of a single rename: test, you write an object keyed by slot number, e.g.

1:
    rename: test1
2:
    rename: test2

so the receiving node's YAML can reference custom_noise: test1 to use the generator on slot 1.

The single OCS_PARAMS output is the whole point - one wire carrying up to five parameters.

The realistic workflow

Wire OCSNoise PerlinSimple into value_opt_1 with key_1: custom_noise, connect a VAE into value_opt_2 with key_2: vae, and run that single output into the OCS Sampler. One node, two custom parameters, no chain of intermediates. The slots also self-document: you can read at a glance exactly which noise and which VAE are going into the sampler, which beats chasing wires across five nodes.

Installing and gotchas

Installed with the pack - ComfyUI Manager search "Overly Complicated Sampling", or git clone https://github.com/blepping/comfyui_overly_complicated_sampling into ComfyUI/custom_nodes plus restart. No models or mandatory dependencies.

The traps are the same ones as OCS Param: the value inputs are untyped, so a wrong-typed connection fails at runtime rather than at wiring time, and slots with an empty key do nothing but still render. Also note the restart_custom_noise and merge_sampler keys only matter for specific merge strategies (overshoot, lookahead) - if your Group uses simple or divide, leave those slots empty and stop worrying about them.