I just installed it on my WQHD ThinkPad running at 225% scaling and everything is blurry. It's definitely not running as a high-DPI-aware app. Are you saying there are some settings I can tweak to fix it? That would be great.
The TrackPoint response is all wrong too, but one step at a time... :-)
Upcoming is Bloc, which uses Mozilla2D as rendering engine and is vector based.
Next Pharo UI will use it.
See https://github.com/pharo-graphics/Bloc