Yealink T56a Handsets Auto Attendant delay

[Krome Technologies]

Firmware: T58A(T56A)-58.15.0.20
Teams users with full MS cloud Telephony licenses and MS calling plans.

Hi Support,
We have 30+ of the T56a handsets that we have deployed to a customer. Direct dial of the users MS Teams DDI works fine in every aspect.

We are seeing a problem when using the Teams auto attendant feature, the delay for the call reaching the handset and it ringing is over 5 seconds, the Teams app on a computer rings almost straight away. This is not providing a good end user experience, is there anything that can be done for this? The Teams app on the computer and the handset is on the same network obviously logged in as the same user.

Thanks very much,
Jason.