Hi team cambium. I have an epmp4500L that just resulted in terrible performance for clients. TCP btests back to tower ~30Mbps on a 40MHz channel. UDP tests varying between ~50 → 100Mbps. 800 byte/10s link tests ~180 / 30Mbps. Massive latency spikes too. The AP log file wasn’t showing clients d…

Hello @scracha , please PM me your techsupport files! I will really appreciate if you can test it on the latest beta 5.12.0-RC36. There is a solid improvement for large sectors under load, already confirmed by beta testing community.

Hi Andrii, It’s not a busy sector with just 12 subscribers. That’s why it’s still on the L access point. Attached tech support file. I’ll wait a few days before trying the 5.12 firmware on it as I don’t want to upset customers. ePMP-Tech-Support-dalE4K-BC_E6_7C_22_A5_22.zip (2.5 MB) thanks St…

Good day @scracha and @aka We are seeing what looks like the same issue, but on a standard ePMP 4500 (not the 4500L) with ~15x Force 400C clients, all on 5.11.0. We can replicate it on multiple sites. The pattern on our side is TCP-specific: UDP bandwidth tests through an SM: ~90 Mbps, completel…

[image] Jaco Boltman: @aka - could we get access to the 5.12.0-RC36 build you mentioned to trial on one of the affected sectors? Hello @Jaco_Boltman , please check you DM box. Also you can join our Beta program to have access to our published beta releases. [image] O…

5.11 poor AX client performance on ePMP4500L

Products ePMP

aka (Andrii ) July 30, 2026, 11:20am 5

Hello @Jaco_Boltman , please check you DM box.

Also you can join our Beta program to have access to our published beta releases.

Please DM me your techsupport files from AP and 1-2 SMs where you see the issue!