I'm not sure about it. I did quite many calls to USCIS coz I have job offer pending. I talked to customer service and second level officer many times But I end up letting go of the position. I applied May 9 and received card on August 23. so its 104 days. I even did 4 expedite requests and two service requests. I made a call in every two days once its above 75 days. it was in Nebraska Service Center. I let you judge for your self if it delays the decision or not.