Unfortunately we still have a few 430 SMs out there (on 450i APs). I have discovered several that keep ending up at 3X/4X MIMO-B according https://trackeasy.fun/usps/ to the downlink https://showbox.tools/ status at the AP. When this happens http://essaywriter.fun/ the SM reports low SNR and the link works badly. Customers report problems like rebuffering.
Shouldn't this be impossible? 430 SM should only be 1X, 2X or 3X MIMO-A.
Is this a known issue with some AP or SM firmware version or something? We still have the 430 SMs on 13.4.1.