Hello
I have a 133 with 3.7 installed
When I enable the second wireless card (no traffic) the cpu goes fron 10% to 90%
Disable and is 10% with about 3Mbps through teh first card.
Any Idea’s?
Thanks 
Have you tried other cards? Was it perhaps a R52H? I had similar problems with a R52H, but when replacing it the CPU was fine again. Only difference was I only had the one card installed, disabled works fine, enabled, no go.
Are you using ANI?
It was a Cm9 no ani
Upgrade to 3.10 I believe this issue is now resolved on that version.
You cannot use rb 133 with multi cards and Ap’s because its to weak and now processor i wass trying before but no sucess, get some rb 532 or another bigest RB.
I’m doing it without a problem…
The Processor doesn’t have much to do with your problem.
A RB133 is capable of doing up to 14mbps of total throughput, as long as you don’t have resource intensive tasks running like queues, proxy etc.
RB133 can deliver up to 30mbps of traffic. Search the forum…
I have done personal tests on RB133 and RB133c’s and you get a stable 14mbps throughput. Above that other factors like interference causes the throughput to play yoyo.
The actual problem here is that the RB crashes (or CPU skyrockets) as soon as a wireless card is installed. I’m merely stating the point that the CPU isn’t the problem. It is either the card or the board itself and either should be replaced.
Put back 2.9.51. It will work better.