1) Download FXD5-2022-08-09-NORMALIZEDMP-Data-1-of-1.csv.gz from https://select.datascope.refinitiv.com/datascope/standard/extractions#
2) Use a c# client (Please dont use Postman as it is not capable of handling huge file size). Also, since we use .NEt console app using c#, it would be more close if you can download the same file using a C# client program.
3) Compare the file size downloaded from GUI and the file downloaded from C# Client program. The file downloaded from C# client program seems to be 4 times bigger than the file downloaded from GUI.