Unexplained jumps on grpc methods

Hi

I am using the c# library for arrow flight. Passing in a query in my dremio service, I noticed that there is a jump in response time caused by the grpc methods, GetFlightInfo and DoGet.

Checking the job profile associated with the DoGet method shows that there is 200ms more in the span than is expected.

Both dremio server and client service are in aws us-east-1

Can anyone help me determine why the jump in ms?