#ZOS, your game was fantastic in 2015/16. I had horrible net connection (download up to 1.3-1.8 MB/s only) and sometimes had pings at Azura over 17k (yes, seventeen thousand) when I was during large 3 alliance battle around keep at primetime, but I was happy. Besides largest PVP battles my weak net was good enough to enjoy game.
Nowadays my speed tests reach 60-75MBs download, 30-40Mbs upload. And performance even at single PVE instances is horrible.
Look at printscreen attached. I've been doing Psijic skilline quest with new toon (during this I'm also leveling Mages Guild picking lore books). Just stopped for a moment to read one of books, when wasp nest respawned, several swarms attacked me and I was unable to do anything. FPS dropped to 0, ping raised to 2-4k, healing skill fired once per 5-6 attempts, attempt to using healing pot did nothing. So I died and respawned at wayshrine. Killed by swarms? Shame...

What did you do to your game?
Give us performance from 1.6 back