This is my current setup: Internet connection is cable. Download 1000Mbps and upload 100Mbps.
Wall – ISP modem / router (bridge mode)
1) Router 1 (Asus RT-AC68U + 8 port switch + Asus AP RP-AC56) in House 1. PS4 wired connection and DMZ.
2) Router 2 (Asus RTAC66U) - Bridge 1 (house1) - Bridge 2 (house 2) - Asus AP RP-AC56
The house 1 and 2 have a separate internal networks and different external IP. I can have 4 external IP's. The internet speed in house 2 is about 20/20Mbps because of the wireless bridge. There are about 20 devices using internet altogether and most of them have a static IP.
The bandwidth (other devices using it) is not a problem when playing with PS4. I have not found any benefit of using QoS.
I'm thinking of trying the Netduma R1 for the PS4 only (Mostly CoD, but allso other FPS games) because of the Geo-filter. The quality of connection is so much depending on the host/server in that game. The connection quality does not really change during the game. Do you think it would be worth to try this setup? I quess running everything through Netduma R1 would be a bit hassle in my setup and it would allso limit the download speed.