When to notify USCIS of address change?

[Romantiques 2]

It's been roughly a month since I received my NOA1.In the beginning of January I plan on relocating to another state.My questions are: When do I notify USCIS of my address change? Should I do it ASAP? if so would it slow down my case in any way? or since I'll still have family members at the address on file after I relocate, should I wait until I get the NOA2 and notify NVC of my change of address? In any case how do I go about notifying either USCIS or NVC about my address change (what forms)? Thank you.

[jkelly07 120]

its up to you, if you want to have family receive your mail,or if you want to change it then you need form AR-11 you can send it to the instructions on the form or you can change it online,or you can call the customer service at 1-800-375-5283,and if you are the sponsor if you filed the affidavit of support 1-864 , then you need to file 1-865 form change of address also.whitin 10 days it says but ?.