SOLVED! Thank you, Peke!
Done a change in the nVidia control panel: "Antialias FXAA" to "disabled", restarted MM and it was fixed

NVIDIA GeForce RTX 3050 Main and second screen: 1920x1080 scaling 100% Windows 11 Pro Intel i5 8600 Ram 24GB Tried fiddling with the suggested settings for DPI and compatibility, with no noticeable changes. Changing skins doesn't work either. Short video: https://youtu.be/9U_DPzLIWS4 And of course ...

Same problem here!
Blur seems to go away when the mouse hover a section, making only that section readable thou.
Tried enabling and disabling GPU acceleration with no difference.

ver.: MM2024.0.0.3082