DIY connection issue

I have a DIY device that sends RC3 messages from a Teensy.4.0 via a HC-06 chip. Baud rate is set to 115200.
I am reusing code that has worked OK with RC on a Arduino Mega before (But with another Bluetooth chip).

When I read the output on a Bluetooth serial terminal i get the following out put that seems OK and with the correct update frequency:


My issue is that RC wont read it. It says: "connected at 4 kbits/s, waiting for data" Much less than the baudrate.

I suspect I may have got something wrong when doing the AT-commands to the bluetooth chip but why does it work with the Bluetooth serial teminal?

What is the correct AT-settings for the bluetooth chip?
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