How to configure FailoverClientConnectionFactory with CachingClientConnectionFactory (INT-3096)

When I use both ways CachingClientConnectionFactory that contains FailoverClientConnectionFactory or FailoverClientConnectionFactory contains CachingClientConnectionFactory I'm getting a bottle neck in SimpleConnectionPool, because of synchronized methods in FailoverTcpConnection inner class. As findAConnection() and send(Message<?> message) are synchronized I'm getting a ConnectionPool with the only connection.