Proxy speed

We are a client running on AWS (Boardman, OG), wanting to connect to a server deployed on the same location AWS (Boardman, OG) who use the Cloudflare proxy.

We encounter a problem is that Cloudflare does not have a data center here. And the most nearby data centers located in Seattle, WA or Portland, OG, would introduce additional round trip for our communication from the client to the server, adding roughly 6-7 ms latency.

I wonder if we could reduce the latency by any method or service. Thanks so much!