For me its when someone tells me to bring them something. If i try to find something that i need, i will find it really quickly. If someone is asking me to find something for them in a room, it is like i become blind and even if its in front of me, it is really hard to find it.
For me it’s choosing what I want to focus on. Obvious things like needing to prioritize important but understimulating tasks sure, but more frustrating is just trying to have a convo with someone while something like the TV is on in the other room or a car alarm is going off in the parking lot.