I have two hotspots - one running rb411 with xr2 and one rb532 with sr2. I have the same configs elsewhere but these two hotspots in one particular area are slow to the users and the cpu is unusually high (50-80 most of the time).

There is a lot of other competing gear in the area where these are located, probably hear 50 other APs if I did a scan. I'm guessing that there are so many more packets coming in on the rf side that MT is having to pay attention to that its creating the load on the processors I see. May also be causing slowness due to csma delays waiting for xmit. Does this sound reasonable?

Is there any way to raise the threshold my ap pays attention to? If I could tell it to ignore anything over the receive threshold of say -85 or even -90 then there is a lot of stuff it wouldn't have to attend to.

Other than that is there any ideas on how to increase the performance of these aps - other than dropping power and locating lower and closer to the users... I'm trying not to have to do that.

Thanks,
Scott