RG6 Quad Shield must be used in all Controlnet installations. 90% of all Controlnet problems is with physical connections and cabling. Crimps must be preformed by trained personell and with Good equipment.
Terminating Resistors must be used at each end of a Trunk.
Number of Connections must be watched and maintained to less than 60% of recommended. Connections are not Nodes!
Network Update Time should be set so to keep utilization to less than 20%.
Y-Taps should be mounted and Cable should be routed as to keep RG6 from kinking.