I've had issues with several programs since upgrading to 4K monitors, so I thought I'd share the fix I use to sort them out.

Right click on the application icon and select 'Properties'.

Select the 'Compatibility' tab.

Click the button 'Change high DPI settings'.

Tick the box 'Use this setting to fix scaling problems for this program instead of the one in settings'.

Tick the box 'Override high DPI scaling behaviour.'

Select dropdown 'Scaling performed by: Application'

When you next run the application the text should not be blurry.