I recently purchased a WAP125, everything works fine in 802.11b/g mode 2.4Ghz only. But when I switch to b/g/n or just n mode its initially much faster, close to the speed of my ADSL link in a download test, but then it suddenly tanks and drops from 50(ish) to 3 and then eventually <1. I probably get 20mins of fast performance before it goes pear shaped. Even when a WiFi client is showing a download speed of <1, the same test on a wired connection still shows a decent speed 55(ish).
This seems to have been a problem on the WAP121 (Solved: WAP121 extremely slow - Cisco Community) which is where I got advice to revert to the older standards but that was 'solved' without actually fixing the underlying issue just tolerating it. Has anyone managed to resolve this?
