BF6 Lag and packet loss (Santiago)

Since the launch of the game I've suffered from high lag and packet loss that made the game unplayable
So far for this I only had two solutions:
1. Play in community servers. I don't know when playing in community servers game runs smoothly and I can see how the game is actually supposed to be (this is how I know it's not a problem with my pc or with my internet connection). This solution sucks, as the only servers available are hardcore modes or HP farming. This is why I haven't played conquest (or any 32v32 game mode) at all, which is horrible being the best mode in BF.
2. Play small modes (dominion, team deathmatch, even rush was good). This solution worked until last update. Since yesterday, rush is behaving as the rest of the game making it unplayable, so I've got even less options to play the game now. Even some matches of dominion is being erratic as well.

This is related to what we thought it was that we were routed through Santiago (I saw in another issue that it was the name of the game during the development). Also since the last update the tenancy field doesn't show anything anymore (weird).

What angers me the most is that a lot of players are suffering from this and I haven't seen any public comment about this. Only some developers closing issues and saying they are working on it.

It's been more than a month since the game came out, and I paid 70€ for a game that I love, but I cannot play.

Please don't hide a tell us what is going on. If you know what causes this and how long do you estimate is going to take.