Lowered DPI: Massive waste of screen real estate

I lowered the DPI on my Note 4 (910F) via terminal with

Code:

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wm 520

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and now on the main screen there's a huge gap between the bottom icons and the apps icons area. same for the apps drawer as you can see in the photos.

I'm not very keen on the idea of installing a launcher. from what I've seen the coords for these areas should be in a file somewhere. does anyone have any ideas?

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