The official word from NetSuite is that 2 sec per line is the expected behavior. That’s over 13 hrs for 24k line import. It blocks as well so no other imports can happen while its processing.

@Timothy I'm super late to the party on this thread, but official "rule of thumb" was 1 second per line. So if they're now telling you 2 sec/line then you're not crazy that that is slower than it used to be.

Thanks for the info. I thought it had changed.