Tax receipt volume question

Hello everyone!

We're planning to do another round of internal performance testing with the charitable tax receipt feature before it is released for general use, and I could use your help. I spoken with some of you about tax receipt volume and generation frequency in the past, but I was hoping to gather some more details so that we can adjust our testing to better match what you all do in real life. I do understand that the way you generate tax receipts today may not be the way you generate them once charitable tax receipts is released, but please give me your best guesses.

1. How many tax receipts are generated in an "average" batch or run?
   
   
2. What is the largest number of tax receipts that you generate in a single batch or run (a rough estimate is fine)?
   1. Do you anticipate this changing once charitable tax receipts is released? If so, how?
      
      
3. Are you breaking your batches/runs into separate chunks due to a technical limitation (for example, the server gets too slow or the emails backup and fail if you try to generate more than 4000 tax receipts at once)?
   1. If so, how many receipts do you wish you could include in a single batch or run?

If there's any other information that you think would be helpful for me to know, please feel free to share that as well.

Thank you!

Meaghan