What exactly is the difference between RC_SPEED and RC_RATE parameters and what is the optimal value for Flame 80 A and Alpha 80 A Esc’s?
I suggest checking the difference in the parameters in the Complete Parameter List guide in ArduPilot documentation. It has a description of each parameter, which should help you out.
Regarding the optional values for the particular ESC, I can hardly recommend anything since I’ve not worked with them. But you may reach out to the users on the ArduPilot forum. There are a lot of experienced users that might have tested those.
The explanations in the complete parameter list are unfortunately very limited, but I will take a look at the ardupilot forum, thanks.