I moved an app from an ESP8266 to a Raspberry Pi Pico processor and none of my servos worked correctly. The servos moved but not the right amount. Then I google-found someone that had given a completely different set of microsecond ranges. It turns out they fixed the problem but did not understand why they had the problem. People sometimes confuse the pulse period, the cycle time, and how the size of the counters interact when banging on something to get it to work.

Blog article discussing Servo PWM and Timer resolution looking at the ESP8266 10-bit timer and the ESP32 16-bit timer
Video walkthrough