Huh. Interesting. Today I had the best performance (PC-NA) that I’ve had in about a week, and I played all day. Didn’t crash or error out at all. I guess everyone’s miles may vary.
PC NA has been fairly stable for me for awhile now and I'm playing from Australia. I did notice my framerates drop a bit in Alinor when doing my dailies in Summerset though and some people in dungeons complaining about rubber banding.