QFHD (3840x2160) Fuzzy/lowRes/not sharp image on 4.10.4

Development Getting Started & Setup
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Hi,
today I’ve installed 4.10.4 version on my laptop.
I have problems with image quality on my 3840x2160 8bit IPS display. The image in UE4 seems scaled from lower resolution to higher. Like from 1366x768 to something around 2560x1440 (not exacly but I’m talking about huge difference). And I’m not talking only about preview window, but also standalone games (mode inside editor) and Windowed. Everything is fuzzy/blurry and not sharp at all.

It looks like it want scale the lower resolution to QFHD, but why? Why it doesn’t want to run at normal resolution? I’ve even downloaded Elemental Demo - same blurry/low resolution Quality.
Because of that it looks so ugly, that i can’t even look on it and do anything. This is quite annoying.

Screenshot: http://postimg.org/image/ne26mdoa7/

This problem only affects UE4.
I will be very happy to see answer, that will help me fix it. :frowning:
And sorry if I’ve written this post in bad section.

2

Solved.
Had to get into 64bit .exe properties and in “compatibility” disable “display scaling on high DPI settings”.

And UE4 widget reflector doesn’t work properly by the way… mouse cursor isn’t working good then (shows in wrong place on preview).

So I’m sticking with native 3840x2160.