Hi all, just looking to compare notes with anyone running 4500 APs with above 20 SMs and passing 120-175 of throughput on AP?

Also, have you noticed any signal/RSSI degradation moving from e3k to e4k and each firmware update?

We haven’t been tracking that. I think that there are too many differences between various e3k and e4k equipment and various firmware revisions that have slightly changed the RSSI/SnR reporting to make that something worthwhile to track. I think tracking modulation and MCS packet %'s is more meaning…

Understood, thank you. I am a user on the 4500 that we upgraded to 5.12 beta and now I have very poor upload speeds, also websites and web UI load slowly, the moment I updated my 4525 I noticed it instantly.

we have a 4500 with 60 clients hitting 350 Mbps in evenings, latency is trash though.

Thank you for your reply, is that 80mhz channel width? What is your Frames at during the 350mbps peak?

@russ007 @Eric_Ozrelic do you guys have the mu-mimo enabled and how has it been working if so?

I’ve been doing testing with Cambium support on a 4500 AP that saw performance degradation on 5.11+. What I have found so far is that overall performance seems better if AP is on 5.10.4 regardless of if the SMs are on 5.11+. Not saying performance is perfect as I still see some major TCP vs UDP is…

We’ve tried all 3 modes, with beamforming disabled, beamforming enabled, and MU-MIMO enabled. Beamforming enabled seems to provide the best latency/jitter. This is most likely due to the additional gain provided allowing higher modulations. When MU-MIMO is enabled, and when it is triggered, beamform…

Might not be relevant as this is a 4600 AP instead of a 4500 AP but here is what I see on a 33 client AP with MU-MIMO enabled. Still has scaling issues IMO as TCP especially is not where I think it should be when doing testing. [Screenshot 2026-06-15 141630] [Screenshot 2026-06-15 141551] [S…

I will definitely check that out, thank you!

Cambium Community

Anyone running 4500 on 5.11 or 5.12 beta with higher SM count?

Products ePMP

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