Same for me.
It started after last week’s patch; game is unplayable in the evening hours, which are the only ones I can play during the week (only few crashes in the morning and in the afternoon). It doesn’t matter if I’m in a city or a fairly empty map, I get massive lag and dc – providing I can log in at all. Usually the furthest I can get is character selection screen. After that it’s just a long wait in the loading screen and an error message after 2-3 min.
I’m in UK, my internet provider is BT.
I never had this kind of issue, not before the patch.