vinnieg: What wiring do you have?
If it's RG59 I experienced the same issues, upgrading it to RG6 seems to fix the issues :)
Spark FibreMAX using Mikrotik CCR1009-8G-1S-1S+. UAP, UAP AC Pro, UAP AC Pro Mesh, Apple TV 4, Apple TV 4K, iPad Air 1, iPhone 6s, VodaTV Gen 2. If it doesn't move then it's data cabled.