Recently (within the past 2 weeks) the Creator API has had a pretty large increase in latency. I don't know exactly what the latency was before, but it was definitely <750ms per API request. Recently it has gone from 1500-2500ms per API request, and in some cases I've even seen 4600ms response times. This appears to be affecting all the API endpoints that I'm hitting, which includes /me, /licenses, /products, etc.
