Is it webui's Bug?

[xiaoxuwei12345]

After I set the number of Stable Diffusion models kept in memory, for example, set it to 3, then I found that when I switch between several models whose size is below 5GB, the models are indeed read from memory(Loading weights from cache). But if one of the models is very large (for example 7GB), then I found that the model is not read from memory, but from hard disk(Loading weights from disk).

The memory of my computer is 32GB, which is supposed to be enough to accommodate several relatively large models. . . . . .

Is this a BUG?