First of all, this is neither a technical problem with my PC, nor my internet connection,. I'Ve been playing for years without a problem, but to further confirm it, I tried to play ESO during the last days on 3 different PCs and with two different network plans (the normal WIFI and my mobile data, which are both completely fine and stable for everything else). Furthermore, I can play without problems on PC-EU (which is slighly closer to my location), but PC-NA is barely playable.

So, what is happening? I can play up to a maximum of 5 minutes maybe before getting a server disconnect. Most times it's considerably less, like only 10 seconds. I needed 10 minutes to just do the quest to get the cake this way, so I could at least get my trade bars.
Yesterday, it was at least better at off hours (at 6am in the morning I could actually play without a problem), but this is also over today and I'm getting the same disconnects now I got in the evening (probably because off hours are also busier on the weekend).

I clearly acknowledge that this only seems to be a problem if you play from a location that is very far removed from the servers and therefore doesn't affect the majority of players, but please, get your servers in order so that they also support these players. It's a very bad first impression of seasons when the game literally refuses to work.

That was also a problem during earlier years, particularly in the first days of the new life celebration, where I would get constant disconnects in Eastmarch, but with jubilee and seasons I can't even get out of the busy zones, because every zone is busy. I'm really glad that your player numbers seem to have increased for the season launch and the sverers are screaming, but for me it unfortunately means I miss all of jubilee.