I'm further from my house router than I was a week ago, but it doesn't seem to have an effect on anything else. My iMac, iPad, 3DS, Vita, phone etc. all still connect without any problems. At first I could still stream from apps like Netflix, and just online performance in games like FFXIV was cut; as of today, the system can't seem to connect at all. Either the "Internet Connection" part of the network test will fail or the "PSN Sign-In" will. When I first moved, the connection was spotty but more than useable. Over the past few days, it's become unworkable.
I got one warning/error message about my router not supporting "packet fragmentation," but I've used the wifi here before, and none of the equipment or setup has changed since then. Like I said, I'm further from the router than before, but viewing the connection status on PS4 shows a signal between 85-95%...certainly enough to get the job done, I'd figure. And when the system would connect, the download test would come up with something like 10-15mbps. The data it gives leads me to believe the connection could be fast and stable, but something is holding it up.
Any ideas would be much appreciated. Tough to get anything done on a PS4 without a connection!