My EAD was delayed by an RFE, so I go an interim for 90 days at the local office.
My EAD was delayed by an RFE, so I go an interim for 90 days at the local office. Now, as per AVM my EAD is approved as well, I am yet to get the card though. As far as I know there should be no impact on you I-485, but again I am not an immigration attorney. If you get an interim EAD, preserve it even after getting your original as you may have to submit (or show) it during stamping.
Hope this helps.