They can open nearly instantly, but they need to be well-built native apps. Lumbering behemoths like Adobe CC or anything Chrome-based is going to be a bit slow, and even smaller apps that pull in a big foreign UI toolkit are going to take a tick or two longer to start.

It’s too bad that the art of building lightweight applications is becoming a lost art.

same with iphones and switching between cellular and wifi connections. I'll be walking away from or toward my home or my office and there's just barely a wifi connection, but hardly enough for any requests or responses to even make it through, yet Apple never allows the phone to fall back toward the cellular connection.

I can't believe in all these years they haven't implemented a dual setup where they connect the wifi and do some kind of test connection or request to confirm it's a stable signal before entirely switching away from cellular data.

On the current M series hardware, in my experience, it's rare for the icon to land from its first bounce before the software is up and ready.