Core Bluetooth: Longer connection times connecting to a 5.0 peripheral vs a 4.2 peripheral

We are developing a BLE device that connects and disconnects frequently. We have noticed that our older 4.2 prototypes, that we can complete a connection in about 300ms. After moving to Bluetooth 5, we noticed that our connection time is up to about 800ms. After sniffing the Bluetooth connection, the appears to be caused by additional configuration messages that occur as part of the BLE 5 connection process.

Is there any way we can configure Core Bluetooth to treat our peripheral more like a BLE 4.2 device and connect equally as fast? The longer connection times on the BLE 5.0 device are causing problems for us.