fluctuating MCS values

I have subscribers on an AP that have recently developed an issue where the uplink MCS signal will go from 16 down to 6 in a matter of a minute or so. it will stay there for a few seconds that make its way back to 16 or 14. It keeps doing this. This seems to be effecting all 5 subscribers on the AP.  We are using ePMP 5Ghz and have run edetect several times and have not found any interferers. Any thoughts or ideas on what might be going on and how to fix it? Thanks


It is mostly caused by interference. Use the spectrum analyzer mode to see the issue. The edetect will only show you like channel center interference as well as like channel width.

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OK, I will definitely give that a look. Thank you for the info.