reloading checkpoint shards with each generation/image - why not keep it in VRAM

[fritol]

using the unchanges controlnet workflow
why is it reloading checkpoint shards with each image generation
after it generates image it clears the VRAM

on the pic u can see two image generations
and loading shards each time

[szghds]

This one is particularly annoying, with every image, the model has to be reloaded.It seriously slows down generation.