Dedicated GPU for Stable Diffusion

I don’t know if anyone have already attempted this.

I am using Stable Diffusion (Automatic1111) with my RTX3060 card. The performances were alright till recently. With the A1111 update, it takes more than 10 minutes to upscale an image in mode image2image. Its even slower if I am watching YouTube at the same time.

So I was wondering if I could use onboard graphics (MSI msi z790 tomahawk) or a separate low-end card to process my day-to-day work and have my RTX 3060 dedicated for Stable Diffusion loads.

I am also planning to add a 2nd cheap monitor as dedicated sensor monitor
So looking for some advice, how-to on achieving this.