When it started occurring
We started playing on Dec 26 and tried playing since last weekend but every time we did dungeons or played it would lag too bad

Platform (PC, PS4, Mac)
PC

Any error codes or messages you receive (if any)
No error messages and it wouldn't show the symbol next to our names when we usually lagged

Type of connection (wired or wireless)
Ethernet for my boyfriend and wireless for me, we use the same network

Other programs running while the game is playing (if any)
no other programs running

Frequency
every time we log in to play usually in the evening