One possible explanation is that the task manager only shows the physical memory (RAM) used by a process and not the memory used, I must research this. If this is true then the task manager information is useless.
From a software point of view, the software doesn't see difference between RAM or disk memory, it only request some amount of memory and the operational system allocates this memory for the software or respond that this amount of memory is not available.
The operational system in this case Windows is responsable from where it gets this amount of memory, RAM, atatic RAM. dynamic RAM, Flash RAM, swap files, USB RAM or any other kind of storage.
I only want to know is how much memory is using the software.

Stupidity also evolves!