[BUG] - Model is reloaded every time seed changes

[Crodu]

Description

Model is reloaded every time seed changes.
If you use the seed generator from SD Parameter Generator, ComfyUi always reloads the checkpoint into memory, which makes the generation process slow. Current workaround is using a separated seed generator.

Reproduction steps

1. Use ParameterGenerator to load checkpoint model in your workflow.
2. Set a new random seed
3. See that the checkpoint is always loading at the beggining of every workflow run, as opposed to loading only on the first run

Image file

No response

[receyuki]

I also noticed this issue, but I haven't found a good solution yet. If I change the checkpoint to a class variable, it can prevent repeated loading, but it also means that the checkpoint won't be unloaded by ComfyUI's checkpoint management mechanism. As a result, even if the user removes this node, the loaded checkpoint will remain until the server is restarted.