In Windows 10 (don´t know on older SO) there is a handy option to increase size (zoom) by using WINDOWS KEY+ Key"+" on the Num key on the right
This way it will (by default) zoom to 200% and movable by the cursor.
You can change a bit some options of this W10 feature, but stock config works well to just see BMS UI
To return to normal, just use WINDOWS KEY + ESC
As a workaround I hope this will help.