Hi,
It is possible to change the scaling with the environmental variable VRAY_VFB_UI_SCALE. You could try setting a value of 2 or 3.
On a Windows machine, ‘Environmental Variables’ are created through the ‘Advanced system settings’ window.
On OSX it is not so user-friendly, so you could download the attached archive, unzip the file within and place it in /Library/LaunchAgents . Afterwards, restart the computer for the change to take effect.
VRAY_VFB_UI_SCALE.zip (550 Bytes)