Idle Response Delay and VRAM Leak After Inactivity

For some reason, after ComfyUI has been running idle for a while, it takes a delay to respond when I start using it again. It usually takes at least 10 seconds or more. Additionally, the VRAM usage remains fixed at around 10GB and doesn’t clear up unless I restart or close ComfyUI. This wasn’t an issue before—it started happening recently, roughly after updating to version 0.8.0. I tried updating my graphics driver, but the situation remains the same both before and after the update, with no improvement.