Knocked together a little diagnostic and tested the gear I had on hand. No idea if settings/bindings are optimal, but would love to hear if this is typical. I tested:
- Sanwa M17 with RX-493
- Futaba T3PV with R314RB
- Sanwa M11X with RX-451R
Shows pulse width, framerate and voltage on the receiver. Ignore the voltage readings - they're just a consequence of the way I tested.
1) Do people get different numbers from these with the same gear?
2) What other gear should I check?

Those numbers look in line with typical SHR mode or regular digital servos. I believe SSR centres around 300. SUR I think has the same centre pulse duration as SSR but ups the refresh rate. Not sure about SXR.
In practice SHR and SSR shouldn't have a significant difference in latency since the refresh rate is typically similar despite having the shorter pulse duration.