1. Check the maximum power your device can draw first, your device may have the limitation for the maximum power input.
2. If you use USB-C Hub with PD, it's very likely the Hubs will consume a portion of power so the actual charging watts will be reduced on your end device.
3. Only use the certified cable for optimal performance, if the charger itself is above 60W, make sure to use USB-C cable with 5A/100W capability.