Issue in Failover of pool member

Scenario

 

2 pool members A & B behind ltm. Load balancing method .. Round robin No persistence Monitoring Probe used tcp_8443 Interval set to 2 sec Timeout 7 sec

 

Issue... Client experiences delay of 10 sec while initiation of Failover of URL from pool member A to pool member B

 

Could anyone advise how could this delay be reduced?Thanks!