Wanted to do this test for some time now, where I compare the latency between TBS Crossfire and FrSky R9M. The setup was pretty simple, I probed the arming switch from the remote and the status LED from the FC(when the FC arms the led turns on) because I thought that this would give me the best result.
The R9 is flashed with EU fw and Crossfire is setup for EU as well.
both modules are fed with 16 channels from X9D with OpenTX 2.2.2.
As a bonus, in the beginning, I am comparing also the HW specs from both modules.
As always, hope this video was helpful and I would appreciate your feedback!