• hello -- you might already be aware that the driver they use will have an impact?
    But just in case here's the link: https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/always-on-client-connectivity-sql-server

    e.g.

    DriverMulti-Subnet FailoverApplication IntentRead-Only RoutingMulti-Subnet Failover: Faster Single Subnet Endpoint FailoverMulti-Subnet Failover: Named Instance Resolution For SQL Clustered Instances
    SQL Native Client 11.0 ODBCYesYesYesYesYes
    SQL Native Client 11.0 OLEDBNoYesYesNoNo
    ADO.NET with .NET Framework 4.0 with connectivity patch*YesYesYesYesYes
    ADO.NET with .NET Framework 3.5 SP1 with connectivity patch**YesYesYesYesYes
    Microsoft JDBC driver 4.0 for SQL ServerYesYesYesYesYes