[PS4] Ping 200 and 2000.

Hello. I've bought this game a few months ago. I'm from South America, Argentina and I play in Brazils servers (Sao Paulo/San Pablo). In the menu, those servers usually have PING about 36 to 60 ms. When I first started playing, there was absolutely no problem. My PING in-game was GOOD with the darkest green. But this past few weeks, some time after the patch, my PING in-game is 200 and sometimes it jumps to 2000 or 2500, making it unplayable. When I try to move, it's impossible. The PING in the menu and server selection is always 36-40. But once I'm in a game, it's about 200. Sometimes I play with 200 (it's really unfair) but some others the PING starts raising to 2000, then it goes down and up and down and so on. I've reached GEN 4 without having any issues. I do not encounter this problem in any other EA game or online games at all, lets say Battlefront or FIFA. So I believe it is only happening on Titanfall 2. I can see in-game when my ping starts raising, other people tend to leave so it's not MY problem only. My internet connection can't be compared to USA ones but it's more than average compared to South American ones. BTW I'm using an Ethernet cable on my PS4. Thank you, hope you can do something about it.