I've got a strange issue on my PS4 regarding COD Black OPS4 and Multiplayer games. I can play certain Multiplayer Modes Online, but modes such as Free for All and Zombies won't work, it gets stuck at the screen that says waiting for other players. My NAT Type is currently OPEN and I have UPNP enabled + the following ports forwarded to my PS4's Static IP:
TCP: 53, 500, 1935, 3074, 3075, 3478, 3479, 3480, 5223, 27014-27050, 57200
UDP: 88, 500, 3074, 3074, 3478, 3479, 3544, 4379-3480, 4500, 9308, 27000-27031, 27036
I've got a Mikrotik Router as my PPPoE Router for Internet Access, my latency is about 9ms and speeds are 10mbps uncapped.