This guy’s channel has some great tutorials on changing parameters in the Mavic using the DJI Assistant 2
For example, I upped the RTH speed and also the descent speed.
I also increased Sport mode speed as I will only use it to fight against wind as and when required.
I am yet to try out the FCC frequency change which apparently gives you more power to your wireless connection, thus better performance over longer distances.
Easy to revert back to default also.
Use at own risk obviously.