It's actually a pretty low definition. Sonar minimal screen requirement is 1280 x 800 with 1920x1080 recommended.
Most notebooks today have 1600x900 or 1920x1080 definition. Mine has 3200x1800 for 15" and is considered a high-dpi screen, and that's where you have scaling problems with scaling-unaware applications.
Anyhow the virtual keyboard shouldn't be to hard to fix if it was designed as a vector object. Surely it's not that bad though so long as you can press the keys and get the corresponding note?