I currently have a C# host that mirrors the screen and mouse on a website, the connection works totally fine, and when the mouse changes on the host, it changes the CSS almost immediatly. This way I can mirror the mouse too.
So here is the problem:
The mouse only updates when I move the mouse on the client website.
Speed and performance is very important here, a quick fix would be to refresh the canvas, or move the page/mouse a little bit, but I'd rather have a more sophisticated approach.