Mission planner connect over radio very slow

Hi Guys,

Having an issue with the Cube when connecting to MP over telem radio.
No issues when connecting over USB.

After changing “AHRS_orient” to “6”. One of my cubes does not connect properly over radio and accel calibration doesn’t seems to stick after reboot.
While connecting it first fails( while it actually connects and starts displaying data from the craft) and then after a few seconds of “trying to reconnect message screen” its connects and starts getting params at the rate of 1 parameter per few minutes, and subsequently gets stuck at “gnd-temp” parameter.

The other cubes with the exact same setup/orientation/parameters all seem to work and connect fine.

How do i solve this?

I already uploaded Copter and went back to Plane and did a complete reconfigure…