TBS CrossFire Diversity Bundle

Hello Black Sheepers. I am currently working on a 700mm quad & I will be using the crossfire diversity bundle. I'm seeing online that a lot of people are having the same failsafe issues. Mainly with the micro Rx on racers. Is there a lot of the same problems with bigger drones using the diversity set-up for short &/or long range flights? Also, how well does the crossfire diversity perform around buildings, power lines & cell towers? I intend for my flight altitude to vary between 6ft - 200ft. From high above trees, buildings & power lines to below, around & in between them.
 

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