Cube Orange Slow Telem2 rates

Hi, I’m running ardupilot latest stable (arduplane 4.0.5.) on Cube Orange with standard CB and found that telem2 port outputs much slower telemetry rates (judged by the lagged OSD output) compared to telem1 and usb (serial0). Could this be a firmware issue or is it somehow hardware related?
Thank you very much.

This completely depends on your telemetry radios. Nothing to do with cube.

I’ve tried connecting both Minim OSD and dragonlink telemetry - both reveal the same problem. Attitude is not updated properly. Possibly, it has something to do with ardupilot code.

and SRx parameters are the same for both ports ?

Yes. They are the same. No changes there. My guess is that orange cube firmware is the problem.

SR2 settings from top down are:
5
1
5
5
1
10
3
1
1
1

Hi, I have this setup with the DragonLink and works perfect
DraginLlnik Pix:
http://www.dragonlinkrc.com/instructions/v3equipment/radiomodem/
brd_serx_rstscts=0
serialx_baud=19
serial_Xprotocol=1
srx_ext_stat=1
srX_extra1=5
srX_extra2=5
srX_extra3=1
srX_params=8
srX_position=2
srX_raw_ctrl=1
srX_raw_sens=1
srX_rc_chan=0

hope this will work