Windows 10: 125% scaling blurry icons on taskbar

Hello. I have an issue with icons on taskbar, when I launch some games with low resolution, after that the icons on taskbar looks very blurry. I have toggled "Let Windows try to fix app so they're not blurry", tried change DPI settings in compatibility section, didn't help. Before I launch game: After:

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Kaspersky icon is Blurry on 125% Scale


Hello,

So I have installed Kaspersky Internet Security 2016 (latest update) on my system running Windows 10 X64.
I always change my Monitor Scale to 125% , after the scaling the icon looks awful.
But when Kaspersky is scanning something (animation icon) - the icon looks crystal sharp, but when Kaspersky is idle, that icon become blurry again.
I have tested other Antiviruses e.g. Bitdefender / Eset - non of them were like Kaspersky. I have asked this question on Kaspersky forum too, but unfortunate no help.
First Image, is when Kaspersky was scanning some file.
Second Image, is when Kaspersky is idle.
So I assume this issue isn't related to Kaspersky, because the icon can be up-scaled w/out loosing quality!
(img.1)



(img.2)

 

Scaling set to 125 % but most of the apps are blurry - How to fix it ?

Give this a shot, it's fairly new.... in Settings:

 

Windows 10 scaling and blurriness issue

A day ago, I suddenly started noticing blurry text & images on my screen, as well as weird scaling issues.

First of all, here is how my status bar and windows look like:








(notice the battery icon, in particular).

All the texts now look different and blurry: in my browser, in terminals, everywhere.

In the browser, websites look different, smaller. To be sure this wasn't just an illusion, I measured a columned layout. Even though the browser scaling is set to 100%, when developer tools report a 1200px wide column, if I take a screenshot and paste it in Photoshop, I can see that it's actually only 970px wide.

I had a look at this question: Windows 10 Font blurry 125% scaling but the suggestions didn't really help:

• setting a custom scaling level of 125% does seem to fix the browser scaling issue, but it scales the status bar and other things to a scale that I was not used to (so this was not my previous value, for sure); also, why would I need to set 125% to make a pixel be 1px wide?
  
• checking "Disable display scaling on high DPI settings" on every application is really not a solution
  

What could be the cause of this sudden change and how to revert it?