Literally in the exact same boat. First time apple developer. Submitted a roughly 30mb file and it's almost at 24 hours. Hoping you get a response here from a mod. I'll be posting in a second as well.

wild. And Apple gives the same auto response no matter what to these posts. Very disappointing. I'm almost at the 3 day mark now. If either or yours finishes please update. Apple - give a real response and fix it.

Thank you for the reply. I appreciate the more indepth answer and the timeframe. I must have missed some files in mine as I just received "invalid" on all my files after 3.5 days of waiting.

So while the first one took 3.5days, the two additional jobs that I submitted during that time all finished at the same time. So it was clearly doing some sort of batch processing. I messed up internal signing so had to restart. New submission took roughly 6 hours. I also submitted a tiny test file which also took the same 6 hours. So again - supports the batch processing theory. Anyways, new build for Intel only took 15 minutes or less. I walked away so the times are definitely improving for me. Just posting the update for others looking into this.