Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wl/STM32WLE5_CM4/GPIOH/OSPEEDR#0x0
GPIO port output speed register
Port x configuration bits (y = 0…15)
https://github.com/modm-io/cmsis-svd-stm32