I solved this problem in 2016 by buying a 4K laptop (Dell Precision 9550) and a 4K external monitor. Similar pixel density; at 200% scale the pixels on the laptop are a bit small but most apps work well. Most GNOME apps, VSCode, Firefox, Chrome all work with HiDPI out of the box and everything looks great, and this has been true for the last 5 years.
Comments
I solved this problem in 2016 by buying a 4K laptop (Dell Precision 9550) and a 4K external monitor. Similar pixel density; at 200% scale the pixels on the laptop are a bit small but most apps work well. Most GNOME apps, VSCode, Firefox, Chrome all work with HiDPI out of the box and everything looks great, and this has been true for the last 5 years.