Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wl3/STM32WL33/MR_SUBG/CLKREC_CTRL0#0x0
CLKREC_CTRL0 register
Integral fast gain for the clock recovery loop (PLL mode only)
Clock recovery fast loop gain (log2)
Control the length of the demodulator post-filter
https://github.com/modm-io/cmsis-svd-stm32