I have noticed a weird behavior in the server browser, but I was able to find a workaround that is reliable (at least for me).
A little backstory:
It appears that ever since the launch of Isle of Siptah, all servers are showing higher than usual pings, often making me unable to play on servers I had no problems before.
I have been tracking my ping while using the server browser - my internet connection is stable and pings to popular services like google are fine.
Servers are showing 150+ ping and I am unable to connect.
Add your server to favourites, set filter to only show favorite servers (+any additional filters to minimize number of servers you’re searching for). Wait for the first/automatic server search to finish - there are three dots at the botom of the screen indicating this is still in progress. Might take 5-10 minutes. You will then be able to click on “REFRESH” button - ping values for selected server drop back to normal and I am able to log in.
This is suggesting that server browser is somehow saturating it’s own connection while searching for all existing servers at once. This should be easily fixable, I am hoping for someone at funcom to find and review this suggestion.