I guess if you have a lot of wireless devices one of these expensive routers is required. The only other wireless device in my apartment is my droid dna, besides the ps4.
Sometimes it's not just your wireless devices, but there's also an issue with
other wireless traffic. That's the biggest reason why people are pushing away from the 2.4GHz band, because it wasn't only heavily used by WiFi devices, but also cordless phones and microwaves.
Although, I believe you expressed that your PS3 worked fine and it's also using 2.4GHz. I live in an apartment, and I've actually hooked mine up via Ethernet. It usually amuses people, because I have a 100 foot cable running from my upstairs computer room all the way down the stairs and wrapping around to go to the living room's switch.
Anyway, that makes me wonder if there's just something wrong with your PS4's wireless setup? It makes me wonder what would happen if I disconnected an antenna from my laptop's WiFi mini-PCIe card; would I experience similar poor connectivity like you do? Could your problems be something like that? I think that's one of the advantages that Microsoft has in their build -- they used a lot of standard parts, which should make them easier to replace. Although, I think they both built in the wireless to the motherboard. I kind of wish they didn't, so then you could just pop out the lame 2.4GHz card and put in a nice 5GHz one.
