That sucks srry to hear that especially as you are on my server, I my self haven't had any issues but that SE for ya! This seems to be a trend with the latest patch update not sure whats the cause of the random spike but at this point I guess its a waiting game for you as you seem to have done all you could to fix any issue on your side.

hope things work out for you, SE should really address these lag and DC issues as its ruining a very enjoyable game!