Shortcut For Maximizing From Snapped

I've recently updated to W10, and am hoping I'm missing a shortcut for maximising snapped windows.

I'm the sort of person that likes to minimise mouse use. I'm used to snapping windows to the left or right using the shortcut "Start + Left/Right Arrow". I can still use this, and I generally like the Snap Assist functionality that now comes with it.

However, I am currently finding it quite annoying to use keyboard shortcuts to get out of this view (i.e. when you have 1 screen snapped left and 1 screen snapped right). The only shortcut I can find for maximising a screen is "Start + Up Arrow", however this will instead snap it to the top quadrant (on its respective side), and snap assist will ask you what you want to snap to the bottom quadrant. From what I can see, you then have to Esc out of this and then try "Start + Up Arrow" again.

Is there not a keyboard shortcut to maximise directly from a snapped window? It's currently taking 3 keyboard shortcuts, which is sort of a paradox.

It sounds fairly basic, but it's quite annoying when you are regularly snapping windows to left/right, and something I could do easily on W7.

For completeness, steps to reproduce:

1. Have several windows open in W10, (min. 3). Also, have snap assist turned on in settings
2. "Start + Left Arrow" to snap active screen to left. Snap assist should appear on right
3. Use Arrow Keys and Enter to select a window to snap to right
Imagine working on these screens for a bit
4. Now try to maximise a window, use shortcut "Start + Up Arrow" - doesn't work, screen will snap to top left/right
5. Press Esc to exit Snap Assist
6. Again try to maximise window, use shortcut "Start + Up Arrow"

Any way to end the process at step 4, that would be lovely!