Blurry fonts in notebooks
So this is something I have partially encountered before (though I can't guarantee it will will work for everyone, or even anyone other than me), the first thing I did was to use this tool to fix scaling issues on Win10 (this is an external program, download at your own risk). There is also a possible option modification that may work for you:
- Open Option Inspector (ctrl shift O)
- Set to Global Preferences
- Go to Formatting Options > Font Options > FontProperties
- Set ScreenResolution to Automatic
Again, there is no guarantee but this is what I have used in the past.