hi. I have performed more tests. these are my results. I am happy to check anything else that might be relevant
there are arount 20 clients connected to this AP, it is a R550 and it runs the latest 200.15 firmware.
> Is the issue only on the 5 GHz band, or do you also observe low speed on 2.4 GHz?
The problem happens on both bands. On 2.4G it is even worse with speeds between 3 Mbit/s and 10 Mbit/s
> Have you tried connecting a laptop directly to the switch port or cable feeding this AP to confirm the wired speed?
I get around 900 Mbit/s so this is fine.
> How far are the clients from the AP when you test the throughput?
I am in the same room about 20 feet. Also I do not move. When I switch off all ssids, I create a new one and I only connect my computer, the speeds are around 500MBit/s on the 5G and around 100Mbit/ on the 2.4G so this seems like an airtime or capacity issue to me but I have no clue how to debug or what to look for in the pcap.
> Was a site survey conducted prior to deployment?
no but I am 20 ft away from the ap with no walls in between and it does not change if I go closer
> Is the issue observed on specific APs, WLANs, or frequency bands (2.4 GHz / 5 GHz / both)?
it is only happening on one AP but on all WLANs and on both frequency bands.
> Is the issue localized to a particular area or observed across the entire site?
the office where this happens is a bit away from the rest of the installation and is served by one access point so I am sure that I am connected to the same AP always. the wires run to one central rack so it is not going across multiple switches
> Was the throughput ever normal at this location, or has it always been slow?
it was better but I can't say when it got worse
> Are there any walls, metallic surfaces, or electronic devices (like cameras, cordless phones, or microwaves) near the affected AP?
no. it is in a wooden cupboard. it stands on a metallic rack which is 3ft high
> Does the issue occur with all clients or only specific ones? (e.g., laptops vs. phones)
all clients
