BGP peering after HA failover

Hello everybody,

I have a 3000D 1-P cluster connected to my ISP via a switch with LACP interface (2 links).

When I trigger a promotion to make my secondary node ACTIVE (failover), I loose about 16 pings.

Is there any way to make my failover faster ? Without activating Graceful Restart will be better.

My BGP timer are 5 15.

Regards,