After upgrading to 5.6.1 textures are low resolution and no shadows are displayed

Unity Engine
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1

Upgraded from 5.5. Everything looked normal in the editor and works as usual but when I later run the game on a phone textures look horribly washed out and/or ultra low resolution. Tested it on 2 phones, and switched between all my quality presets without any effect. Shadows aren’t working either.
I checked player settings, imported textures, lighting settings, quality settings,… but nothing.

Any idea what could cause such a behavior?

2

So, I found one piece of the puzzle. The washed out textures were caused by mipmaps. For some reason, they behave differently on Android than in the editor.