More follow-up: while playing at my friend's house for a couple days, today, finally, I got the 90k error. 3 times! and as usual, it was at any old time. twice it was in dungeons, and once in new gridania.

So... Is it comcast AND at&t? or is it just me? is it the server congestion? who knows! we'll find out soon enough if it is server congestion after today's downtime. I moved my computer back to my house. I'll update again once I play throughout the day tomorrow.