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by andai 355 days ago
A few years ago I ran Windows XP in a VM inside Windows 10.

When you pressed Win+E, Windows opens an explorer window (in both versions).

In XP this happens in the span of a single video frame.

In Windows 10, first nothing happens, then a big white rectangle, then you get to watch all the UI elements get painted in one by one.

The really impressive part is that this was before they rewrote explorer as an electron app! I think it might actually be faster now that it's an electron app.