I’ve been trying to troubleshoot some deployment (C5210s + 3935i) and low throughput being experienced at times. We have managed to get it quite well (e.g. 100 megs with single STA connected on 20 MHz channel, 2x2 11ac, iperf on local network) but there was number of APs (maybe 1% of them) where it was not getting more than 20-22 megs even though AP config is exactly the same. AP reboot helped and “full speed” got unleashed.
I know there was an issue with 3935s regarding frame aggregation but it was for some older version: https://gtacknowledge.extremenetworks.com/articles/Solution/AP3935-stops-aggregating-packets-over-time-on-version-10-31
And I deal with 10.41.18.0001 currently (upgrading is a no-go in that case for other reasons).
Did anyone experience the same? I’d love to solve this without a scheduled reboot task. ;)