I’m sure it vary’s from case to case but we had a small issue with a RFE. The status in the portal was changed to RFE and we didn’t receive anything for 2-weeks. At that point I called the USCIS and it turns out they had a computer glitch and couldn’t confirm whether or not they sent out the RFE notice.
The USCIS resent the notice - it arrived approximately in the same time frame as the other documents (change of status in portal to receipt in mail = approx. 5-7 business days).
Our RFE was simply questioning why we listed to work addresses. We described in a letter the primary address and the possibility that the beneficiary/employee may travel, on occassion, to a 2nd business address but for less than so many days per year. We also confirmed that this was a direct hire employee and not for contract.
The response back from the USCIS took about 4-weeks. It seems like we went to the back of the line, but finally, the approval was posted.