Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wb0/STM32WB06/RADIO/AFC1_DIG_ENG#0x0
AFC1_DIG_ENG register
Set the decay factor of the AFC loop after Access Address detection
Set the decay factor of the AFC loop before Access Address detection
https://github.com/modm-io/cmsis-svd-stm32