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Circumstances

  • Windows 10 Version 1709 x64
  • One 4K (27") and one 2K (27") monitor
  • Nvidia 1050 TI

Feel free to ask for more information, if you need them.

The Problem

Everything works fine if I don't use the Scaling option of Windows 10 (Settings > System > Display > Scale and layout). However, if I don't use the scaling function, the content on the 4K monitor is very very small.

If I do use the scaling function as recommended (150% for the 4K monitor, 100% for the 2K one), it looks good in general. However, in some applications (Outlook, IntelliJ, ...) the content on the 2K monitor is veary blurry. While there might be a fix for the programs in specific (even though I wasn't able to do this), I'd like a general fix for this problem.

Furthermore, when I use the 4K monitor scaled by 150%, Windows doesn't seem to be quite able to measure the correct size. That means, if I'm at the top right corner of the 4K monitor, at which a maximized window is open, I don't click at the closing button, but slightly above it. This is not that much of a problem though, I could adapt to it.

What I've tried

  • I tried running the programs (I tested it with IntelliJ) with Override high DPI scaling behaviour set to System and System (Enhanced), while using the recommended Windows scaling options
    • The programs controls are as tiny as if I hadn't scaled the monitor at all
  • I tried scaling both monitors by the same factor (125%)
    • The controls on the 2K monitor are terribly huge
    • The controls on the 2K monitor still look a little bit blurry, but not as much as before
  • I tried this tool
    • The same effect as with scaling both monitors by the same factor
  • I tried setting my 2K monitor as primary monitor
    • The contents on the 2K monitor are blurry
  • I (obviously) tried logging out and restarting my computer for each option I tried
  • I tried some specific solutions for IntelliJ (which didn't work), but I don't think they're relevant here
Improve this question
6
  • Great question - I have the same issue and came across this post: blogs.windows.com/buildingapps/2017/04/04/… but it sounds like you've tried everything in there already. The only work around I have is to log out and back in again after I've connected the monitors. This clears up the blurriness.
    – stuartm
    Commented Mar 27, 2018 at 1:41
  • It seems like JetBrains fixed their HiDPI problems, which makes the scaled monitor usable, but the problem's still not solved, e.g. windows dialogues are still blurry quite often.
    – MetaColon
    Commented Apr 24, 2018 at 18:12
  • I have this problem too. This is one of the oldest Windows 10 problems, can't believe it only has 2 upvotes (now 3 with mine). Did you find a solution?
    – David Balažic
    Commented Jan 6, 2020 at 13:13
  • @stuartm Thet blog says at end "If so, please leave a comment below or reach out @WindowsUI." But I see no way to comment. Does anyone know how to contact them? That do they mean with \@WindowsUI ?
    – David Balažic
    Commented Jan 6, 2020 at 13:22
  • @David I ended up finding solutions for the applications themselves, i.e. special adjustments for IntelliJ and so on. It seems it's less the fault of Windows and more of the application developers - which makes it only more ridiculous that outlook has (or at least had) this problem.
    – MetaColon
    Commented Jan 6, 2020 at 18:04

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