Well, it's strange fluctating continues. It's been like an awkward game of minesweeper but in reverse; which regions aren't affected over which are. I logged in to a ping of 449, went to a neighboring region, same response, went to the other side and the ping was 184-200, the one after this was 300-350, following this it was back to 450-519; so the average. Not all regions stay the same I've noted, at differing times of day the ping will reduce almost back to normal, other times one region large unaffected becomes overloaded.
The experience in moving your avatar through it feels sluggish; like you're pushing a very full shopping trolley around. No packet loss just random high ping. Resetting router did nothing to ease things. It's strange that three days ago everything was fine everywhere and now each day has become a struggle. It's been putting me off of going anywhere because of how difficult it is to move.
Edit: to add just now whilst standing in my empty home region the ping has been climbing.. to now at times 649. I visited the nearby region with a lower ping and it's still 183-200.