On a high DPI (HiDPI) screen TigerVNC is unusable. Would be it possible to implement scaling factor option in TigerVNC client? Remmina seems to support HiDPI out of the box.
Please find a screenshot below. TigerVNC is on the left, Remmina - on the right. Both are connected to the same VNC server.
If you are using Xvnc (or vnc server) and you only connect from high resolution displays, the -dpi option to Xvnc may be useful.
I tried running it with -dpi 192. Not much of an improvement.
try larger numbers like 500 or 1000, also make sure you have a scalable fixed width font.
It looks really bad with higher -dpi. In my opinion scaling should be done on the client side. It should be font and application agnostic. Just like Reminna does that (see the right side of the first screenshot)