Thank you for your explanation and your suggestions. I have tried the "Clear Type" and the "Smooth edges of screen fonts" features that you've suggested but the result is always (much) worst in comparison to leaving these two features at their defaults.
I would like to underline that, as can be seen from my initial (first) post, I have never faced any kind of text appearance issues with any browser or other program that I regularly use. IF I would have faced such issues with Google Chrome, my current default browser, or other programs that I use daily, for hours, I would have wiped out Windows 10 from my system completely, and I would not consider even thinking about using them again, at least not until I would replace both of my monitors.
Right now, however, I see this blurry - not crisp text only on those Windows components I mention on my first post. The truth is that I see this blurriness on some programs (and their installers), as well. CPU-Z is one example. I already resolved this, though. By ticking "Disable Display Scaling On High DPI Settings", for all these programs.
Oh, and I always use the latest NVIDIA driver + my monitors' native resolution. Always.
Later today I will try to "work" a little bit with that option called "Change only the text size".
My impression, so far, is that this is something I will have to learn to live with... Just to learn something new out of all of this, though, tell me please from what exactly does this crispiness but also the appropriate text size really depends? Does it have to do with the dot pitch and the inches of a monitor? What is the relationship? In other, simpler, words :
- What specifications should a monitor - of 24" or bigger - have to display all the text crisp, sharp and at around size "11" or "12". For this last figure I'm not sure I express it correctly, but to understand me imagine a desktop of 125% zoom (or DPI?).