From earlier this month, but related to 2019:
"My orders were dated 12 March 2019, I received my severance pay on 21 June 2019, and the letter from DFAS on 26 June 2019. "
Although that is not a current update, it shows that a payment was made about three months after the orders were issued.
Thoughts: The processing time for severance pay is difficult to determine and it is my belief that it is ever-changing. The severance pay cases continue to flow and that has a bearing on how long it will take to process a payment. Additionally, if SGT Smith received his/her payment within three months and two days, that doesn't mean the payment for SGT Jones will follow that timeline. That said, if I was waiting for a severance payment, I too would want a precise payment date.
Guess: Payment within three months after the orders date.
Good luck,
Ron