Ok, so if a transmitter is sending a serial PPM stream to its XPS Tx module, and the receiver gets the new stick positions every 22.5ms, then the servo gets the new positions every 22.5ms.
When a transmitter uses XJT-D16 to communicate with its XPS Tx module, and the receiver gets the new stick positions every 18ms, then the servo gets the new positions every 18ms if it can take it (presumably it gets worked a little harder in the process).
When a transmitter uses XJT-D16 to communicate with its XPS Tx module, and the receiver gets the new stick positions every 18ms, then the servo gets the new positions every 18ms if it can take it (presumably it gets worked a little harder in the process).