AWS latency is Asia-Pacific

Is anyone else seeing increased latency both within AWS and transit in the Asia-Pacific region? We normally see 90-100ms between Aus and Sing within AWS, for the past 18 hours or so this has jumped up to 190ms - even for internal VPC-VPC traffic. Transit from Aus to Sing (3rd party endpoints) is also 190ms or so. So far, Amazon has told me everything is fine, but that same latency test from a budget VPS provider in Sydney to Singapore is like 92ms, whereas on AWS its 190ms. I have some tickets in queue, but curious if anyone else has observed anything. -John