Delphi case

Delphi supports interfaces natively. Any variable of variant type can store an interface like any allowed data types.

Here is the check list of Windows 10 services that may be deactivated to free some memory and other resources.

• 'Connected User Experiences and Telemetry' service (previously 'Diagnostics Tracking Service' in Windows 7/8/2012). Unfortunately, it is not sufficient, you should also go to Task Sheduler and disable all tasks in the folder \Microsoft\Windows\Application Experience. Also check that they are still disabled after any Windows update

To be continued...