I rolled back to Windows 7 after I encountered the dreaded blurry text issue (Google 'W10 blurry text' - there's acres of complaints). The reason is that MSoft doesn't give a rat's ass about the millions of desktop and laptop computers in the world - it firmly believes we, like them, lie around in bean bags sporting trendy moustaches, playing around with 'mobile devices' as we sail into their golden vision of the future. So they changed how text is displayed in W10, optimising it for these devices and the rest of the world's desktop and laptop users can go whistle as we don't fit into the new vision. I believe there's a fix somewhere, but I thought 'Why the f* should I waste time on such nonsense' and rolled back to W7 which is just fine.  Oh, and W10 didn't let me see my two printers - didn't install the simple common drivers and even claimed there were no devices on my home network. Some vision.

It says, "Go to configurations. Go to systems
move slider to change size of text to 150% and press ok
After sign on again do the same but change the slider to 100% and press enter."
 
I did change that solution back and force, but not with signing out and restarting. Just changing that setting and changing it back did not work, but I will try to change it and restart. Thanks for sharing. Will update.
 
Skyline, I already got used to bad text quality on my other Win 10 computer. There is settings for it that let you work with the different text samples and pick the one you like out of 6 samples at least 5 times, but it is not that helpful. You only realizing it when it switches from good to bed...

Skyline_UK
I rolled back to Windows 7 after I encountered the dreaded blurry text issue (Google 'W10 blurry text' - there's acres of complaints). The reason is that MSoft doesn't give a rat's ass about the millions of desktop and laptop computers in the world - it firmly believes we, like them, lie around in bean bags sporting trendy moustaches, playing around with 'mobile devices' as we sail into their golden vision of the future. So they changed how text is displayed in W10, optimising it for these devices and the rest of the world's desktop and laptop users can go whistle as we don't fit into the new vision. I believe there's a fix somewhere, but I thought 'Why the f* should I waste time on such nonsense' and rolled back to W7 which is just fine.  Oh, and W10 didn't let me see my two printers - didn't install the simple common drivers and even claimed there were no devices on my home network. Some vision.

Sometimes I do feel sorry for M$ this is nothing to do with them
The people you need to direct your complaint to is the people who make the drivers of your display adapter (AMD/nVidia?).
If you haven't updated to the latest drivers (from third party site) then you didn't configure Windows 10 correctly (don't expect it to be "automagic"), or they haven't supplied good enough drivers then you should pounce on them. 

Likewise, same with your printers.
 
With nvidia for instance initially I got this "blurry" issue until I updated the drivers from nvidia's site and configured them correctly. However I have another PC with an old AMD display adapter that AMD will not support with Windows 10, so sadly I have blurry text and I need to buy a new compatible display adapter. 
 
Also many of the "blurry" issues I notice are from not setting the monitor refresh rate and resolution within Windows 10.
 
And "didn't install the simple common drivers" - There is no such thing nowadays. If only there were.

It worked! The issue fixed! I am so happy. Should not be too happy till I test all my 300 VSTs..., but at least Sonar looks normal and I may try this trick on my other computer. Thank you very much.

I am guessing the thread Brando and I linked was the fix. If it was something else please note the solution in a post. Also please edit the initial post and update the subject line with [Solved] so others may benefit from this thread.

Yes, thank you for reposting the link- this is what solved it:
"Go to configurations. Go to systems
move slider to change size of text to 150% and press ok
After sign on again do the same but change the slider to 100% and press enter"
 
Thank you.

you are welcome
thanks for wrapping the thread up