Hello, I am still awaiting support to tell me the root cause. I am being told the fix is in Stable Release candidate 28.6.  I would upgrade the firmware to 28.6 then test speeds.  28.6 was supposed to be a BETA release but Meraki's thorough testing has classified it as Stable RC. ... View more

Hold please, I am inquiring about the details. ... View more

This solved our issues too!  Although I had to run both commands on a windows 10 21H2 client.  It didn't find 5009566 but did find 5009543.  Great solution, M$ get it together! ... View more

With the MR56 we had very slow upload speeds which affected the clients poorly.  Meraki identified an issue and fixed it with a custom firmware that is supposed to be released in beta 28.6.  Do some speed tests on the internet with a connected client and see what your upload and download speeds are.  IF you have slow uploads like I was getting 2.5Kbps then contact support and try the firmware.  Reference case #05512885 for them to identify the firmware that was built. ... View more

This issue has been resolved.  Meraki Support identified an issue after multiple packet captures and airpacket captures, and resolved it with a custom firmware.  The fix I am being told will be included in  BETA 28.6.  I was able to have Meraki install the firmware on close to 200 MR56 AP's.  Thanks everyone for suggestions and help in narrowing down the focus for troubleshooting. ... View more

The WAPS are also all in the same network so same exact SSID config etc.  I've check rf spectrum and didn't see any high utilization at all or interference except for the 2.4 channels which are garbage anyway. ... View more

It's slow all the time.  We walked across the street and removed an MR42 and installed it in place of an MR56 and the slowness went away.  We have literally limited it down to just the MR56 model.  Both of those schools are also running the exact same GPON network all attached to the same OLT directly with Single mode fiber. ... View more

We are using Dasan Zhone 2608T ONT's.  Each port is 1GB, AT power.  The backend system is a GPON network. ... View more

I'll try without 802.1R, We are using 802.1X with on site radius server.  We've also tried disabling 802.1AX per Meraki suggestions and neither seemed to resolve it.  We can unplug and MR56 and plug in an MR42 and get easily 10 times the throughput when doing internet speed tests. ... View more

SSID is bridged with 802.11r enabled.  802.11w is disabled and Bonjour is disabled. ... View more

Clients: Surface Pro 4, Samsung Note 10, Iphone 11, HP x360 G1 Chromebook. Band: 5GHz  Channel Width: it was 20 then we switched to 40 Firmware: 27.7.1, we have tried a few on the latest Beta firmware as well.   Slow is we are getting around 50-70Mbps download and 0.25Mbps upload speeds.  We have a 2GBps internet connection and we've ran these test in the off hours to ensure no interference from other users.  We have the SSID set to unlimited per client and SSID. ... View more