@colinster We might just do that. I recently posted this: https://community.meraki.com/t5/Wireless-LAN/WLAN-speeds-suddenly-became-erratic/m-p/91249#M13427 I think reflecting on this thread might have given me the answer to what was going on. At one point in the last month or so I created a new RF profile which removes UNII-1 ranges. I applied this profile to two of the affected three stations. The plan had been to integrate a point to point Ubiquity shot which uses UNII -1 and I didnt want our Meraki stuff stepping on its toes. That ended up not happening (we found another solution) but in the meantime developed the problem in the above thread. What I didnt realize and now gather was that DFS prevents the use of some of those middle channels, so effectively there was some co-channel interference at 80mhz with UNII1 off limits. We changed to 40mhz channels and reenabled UNII1 on all APs and the speed issue seems to have disappeared. I think we could probably reenable 80mhz channels but I dont think it will make a huge difference for us in terms of speed as I cap WAN bandwidth at 150mbit and we aren't sending a lot of big files that would necessitate 80mhz wide channels. Does that all make sense to you?
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