Yes, It's pretty unplayable.

Joined a high tier battle for the first time since all this has been happening (as a healer of all things). R0'ed mid fight down to 70ish %, missing vital heals, tank dies, another player gets completely DC'ed due to it. Then it was all an up hill struggle which resulted in failure purely down to the connection issues.

Can we have an update on this please? It's been around about a week now and not a whisper of information from SE.