What speed longest ever link used on a 3 geo deployment?

Team

Lots of people ask what is the longest link ever tested and used on a three geo deployment?

I know it’s all about latency and round trip time

We test to 200ms RTT, but recommend no more than 50ms RTT between sites to ensure overall performance. For connections with greater than 50ms RTT we recommend using either 2-site asynchronous replication.