Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32G474xx/HRTIM_Common/ADCPS1#0x0
HRTIM ADC Post Scaler Register 1
ADC1PSC
ADC2PSC
ADC3PSC
ADC4PSC
ADC5PSC
https://github.com/cmsis-svd/cmsis-svd-data