In some cases when a user is attempting to create large PostScript files, it's possible that he or she will encounter the following error: "Output file too large. (> 2GB)".
Upon creating the PostScript (.PS) file, the following error occurs: "Output file too large. (> 2GB)".
This error is caused by an internal memory limit. Hence, it's not possible to create a fix for this error. However, in most cases it's still possible to output to PostScript correctly by optimizing the document.
Optimize the original artwork document by:
Disabling the option Output Gradients as Images via More Settings in the Print Settings window.
Using Lossless compression via More Settings in the Print Settings window.
Adjusting the images' dpi according to the printing lpi.
Down-sampling and replacing images where possible.
As PostScript is old technology and as it isn't being actively maintained anymore, it's best to migrate from PostScript to PDF.