Connection problems on EA's Star Wars Battlefront 3

I got Star Wars Battlefront for my PS4 and I wanted to connect to an online multiplayer game, but it said "You have lost connection to the PSN. Online features will be unavailable." And I have no idea why. EA said to open ports, but there were a lot of ports in use. It's so stupid to have port 80 required to be opened, as my router's web page is on port 80. I disabled UPnP as it was using some ports. But I am not sure I should have done that. And there were still ports in use. Is it just the fact that my internet is too slow, because I could play games with a low amount of players, or is it some other problem? If it is internet speed, how can I fix that? Or if it could be another problem, how can I fix that? I desperately need help with this.
Asked Dec 28, 2015

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