1036 12g 4s cpu over percent ping timeout

(other then my winbox session), I open System/Resources. It shows the CPU setting at 0-1% as you would expect. I Open Inerfaces and the CPU jumps to 10-15% and bounces around that range. Close Interfaces and back to 0-1%. This same thing happens on both of my server! Keep in mind, there is NO traffic on this FRESH install of OS 6.40.6. Opening any other window, doesn’t seem to have effect on CPU, just Interfaces.

many time r post but not any solution please help …