as long as you have relatively early PD, do not worry

I found that if USCIS delayed your 140 or 485, like 6 months comparing to the similar cases, they made it quicker in the next steps. They pay attention to the PD not the receipt date. So Averagely, EB2 485 (NIW or LC) cases were approved within 2.5 years.

One variable factor is FBI name check, they do not esteem the PD order.