If you're going for speed you're not going to do much better than this 12-second 18-move solution that uses keyboard shortcute. Once it loads, do a little "twitch click" to give it keyboard focus, then type this:
LsllddrBurDRLFddLu
Capitalization is important. Note that since the keyboard shortcuts have some animation lag but are buffered, you can be a bit slow at typing it. Unfortunately I was unable to find any keyboard shortcuts for 180-degree turns, so you can't get this down to 15 moves, as shown in this video: • 15-move Google Rubik's...