IPSEC on Wireless Link

Hello I have a performance problem with ipsec

My config is :

2x RB433AH with two XR5 5G from ubiquity configured as dual nstream.

since here all ok, throughtput 50 mbps and more (not with bandwith test)
but when I swtich on ipsec tunnel the maximum speed is 3 mbps and CPU 100%.

Is there any other solution for ipsec? or there is nothing to do with these CPUs?

thanks

What’s new in 4.5:

*) fixed Nstreme issues with bridged traffic
*) ipsec - added blowfish, twofish, and camellia encryption algorithms;


Try Twofish instead?