I have been thru these forums for over year trying to find a solution for my P3P problematic video transmission. To date, I can be flying in the middle of nowhere with clear skies, full bars on DJI GO app for the RC, standing next to the drone and after a few minutes the video transmission will start to stutter and pixel glitch. Firmware is up to date, I have reset the RC connection, I have used a Galaxy S7 and a Galaxy Tab 4, and even used the Litchi app. Problem still occurs.
I need to point out that I do not get "Weak Transmission Signal" errors.

I recently "heard" from a fellow flyer that he heard from another P3 owner that a previous firmware update a while back permanently damaged the radios, leading to this issue.

Does anyone have any information in this since I can not seem to find it?

I have exactly the same issue with my Samsung S6 Edge Plus.
But there is a lot a frequency noise in the bands domain available.
I will take a picture as soon as i will switch ON next time.

Something that can be avoided with any tune/calibration?

Well you can downgrade back to older firmware by adding P3X_FW_DEBUG file on sd card with older firmware. Look at this page: http://www.phantompilots.com/thr ... -9-to-1-7-6.105384/ i dont take any responsibility, it might brick your drone. I have done this and i succeed.

maybe its due to the tablet or phone you are using to connect!

yeah... they took about 1/2 the available channels away due to FCC  so now you have to fight with any WIFI signals in the area

We have to try with another device...unfortunately I don't have any Apple device to try with.