I configured 2 routerboard 333 ROS 3.3 in nstrem dual ,5ghz turbo,framer policy best fit…The cpu is used 100% 
, bandwidth is 20 Mbits TCP.What cpu it takes to get 30 Mbits full duplex ???With 2 Routerboard 333 equipped frrom 3 wireless card R52H ???
sorry for my English I am french 
Thanks
reboot the router board
and see whats happened.
bcuz i had the same problem.when i reboot RB cpu load fall to normal one .
regards,
vipul
thanks vipul
I restart the router and nothing to do,the cpu is at 100% only when I tested the bandwidth,Without the test of bandwidth the cpu is a 5%.
Because of a cpu I may not have more bandwidth! What happens cpu need to have 30 Mbits for example?
Regards
Erik
try to lower tx power.uninstall all unneeded packages, install latest version, turn off connection tracking (if you are not using nat).and always do bandwitch test throught routers not from rb to rb
try tests on the other side of the boards/connect 2 fast x86 machines and do tests from them/
Try to monitor system recourses via telnet or serial port without Winbox started. You will see the difference.
Hello
thank you very much for your support 
I been testing several motherboard ALIX 3C2, PC, RouteurBoard, etc. !!!
RB333 should normally give TX/40 Mbits RX/40Mbits FullDuplex .
Version ROS 3.3 must have a problem I am going to test all versions…
Thanks for all
Erik