Before searching for problems with the diagnostics please check, if the connection with the car is successful. Please look here, if you have problems with the connection.
The speed of the diagnostics of F-models is on purpose slower. This assures that as many ECUs as possible are found of your f-model. The speed of the diagnosis of E-models should be sufficient.
Also, the iPhone WIFI generation 2 adapter can be slower than the Generation 1 adapter. This is normal.
In case of problems with the diagnosis itself or the speed of the diagostics of E-models, please contact us using our contact form.