@amitgour, I see that you have made multiple posts with the same issue over the forum. Could you please try limiting this? Avoiding this should make the search index easier for the entire community.
FYI, please be informed that when you have a lot of media files (or a media file that is of a greater size) on the server it should take time. If you still wish to download them faster, you could try using the approach outlined in the support article:
