East coast corridors just went tits up on us...specifically routes going through Ashburn/DC from my end via TATA. Just ran a battery of tests and it also escalates at Toronto for them as well. Was even getting losses on the forwarding side coming through DC.

May want to run some traces/pings/pathpings and forward them to your ISP's Tier3 support to see if maybe they can adjust the routing away from there for a while.