I use my 23″ monitor as the main display when paired with my 14″ Windows laptop (HP EliteBook 840 G3). 150% display scaling is fine with 23″ of glorious, screen real estate, but eye-achingly small on just 14″; i.e., when I go for meetings. As a result, I’d toggle between 100% and 150% display scaling, and there’s the added hassle of having to re-login for this change to take effect.
Today I learned that you can configure separate settings for each display when using”Extend these displays” rather than “Duplicate these displays”. My thanks to this other article, saved me a couple of minutes each and every time!