I strongly advise you to use the following settings in your APRS client software:
It is important that the APRS users and sysops set up the APRS client software for a better performance of the national network. It must ease the mobile stations operation, once they are in worst range conditions.
Home APRS stations:
Use short text beacons each 20 minutes or more.
Do not enable digipeater or iGate unless there is no other in a distance of 50 km, or in a higher place.
Use allways SSID less or equal then -2, for example WIDE2-2. If possible, try to use the digipeater call instead of WIDEx-x feature.
Do not use TRACE, RELAY or just WIDE path. They are already obsolete.
Mobile APRS stations:
Use positioning beacons each minute for low speeds or each 2 km for higher speeds.
Do not use SSID greater then 3, for example WIDE2-2 will be enough.
Do not enable digipeater, unless in emergency situation.
Here you can find some guidelines about the best configuration for APRS users. Thanks to CT2IRJ – Salomao Fresco.