C;\ is being used when comfyui is running, then liberated when comfyui is shut down.

[ClothingAI]

Your question

My device went as low as:

When running a workflow related to pulid: cubiq/PuLID_ComfyUI#93
As you can see in that issue I was trying different configurations of models versions trying to make it work (still don't know which config works)

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When I closed comfyui, it went back to:

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How can I tell ComfyUI to not use memory from C:?

BTW, the running comfyui I was using was located in another disk than C.
Also my cache base path for huggingFace stuff is outside C normally.
So I don't know..

[ltdrdata]

The rapid decrease in C: drive capacity while ComfyUI is running is typically due to insufficient RAM, causing swap to occur.
Please check this.