I don't have too much experience in GUIs and I've been looking at iced and gpui recently for a new GUI application.

iced has some nice looking apps written using it, but they all seem "laggy" on my high-end Linux box somehow. I'm wondering if this is a limitation of the immediate mode GUIs, or something related to my system, or an issue in the apps?

For example, drag-and-drops or selecting text with mouse lag behind the mouse cursor.

I'm wondering if I'm not holding it right somehow?