Set the size to 8 or 16 instad of 1-2 and/or split the torrent guess you are talking of rared tings, and some trackers don't allow fx 2000+ files in a torrent

If you want help you have to be more specific like:
I try to create a 75 gb torrent that is splitted into 12.000 rar files
I used the following program (utorrent rutorrent déluge tranmission)
With thise settings private torrent / start seeding / and pize side fx 1