I do hope Cambium is still working on optimizing 80mhz and 160mhz channel sizes for TDD PtMP. On 40mhz I can easily get almost 400Mbps down, but at 80mhz I usually only see around 600Mbps to a single SM in PtMP TDD 75/25 mode. So double the channel size for only 50% more bandwidth. I know a wider channel will get more noise and will not translate to a 100% increase in performance, but I guess I would expect at least an 70-80% increase over 40mhz.
It could be an issue with the 4625 SM’s processing power as the AP seems to get closer to Cambium’s estimates when doing multi-SM link tests even without MU-MIMO.
This is well below Cambium’s own estimates via the ePMP Capacity Planning Tool which shows 80mhz should be near 800Mbps or more.
ePMP 4k - 80mhz performance bottleneck - Products / ePMP - Cambium Community