What can limit the file size sent to the printer 2GB?

Question

Iron

What we have:
interior printer 1.6 meters (China)
usb - key for printer
software phothoprint dx
usb - key for software.
the printer itself is connected via usb
in addition to the printer driver, there is a server program with which, apparently, the printer is being sent.
photoprint specifies the print address 127.0.0.1:9100.
In general, the very essence of the question:
what factors can limit the file to 2GB.
does not work only for us. suppliers sin on the computer. but we have not changed one.

Answer 1

OS bit depth, file system, how accurate and strict is the file size limit, does the file size limit vary or is it always the same up to a byte?

Answer 2

Does the bit depth and the version of Windows in general match for you and those who work for you?

Answer 3

And the internal memory of the printer is not fat16?