HomePod mini Intercome

I have set up a Siri shortcut which has all the morning briefing for me and I want them to be played on my HomePod and I have made it in a way that it will intercom everything in one go

But since I have updated my HomePod mini to the latest software update that is iOS 18 the intercom messages are in a very high speaking rate

Does anyone know how to control the speaking rate of intercom text messages?