Very few people are going to have connectivity problems. There's always someone who'll say they did, but they are going to be in the minority. It's going to depend on a lot of factors, not the least of which is the distance between the camera and the receiver.
I purchased the Furrion rear observation camera (note: This is different from the back-up camera) and it works fine - connectivity-wise. I'm not real happy with the picture quality and so I've been thinking about the Haloview system.
2019 Cougar Half Ton 26RBSWE - "Bertha"
2019 GMC Sierra 3500 Denali HD 6.6L Duramax TD, CC, 4WD, DRW - "Mr. Beefy"