help!

Hello,
I and I need some advice from you if you can help me .
My problem lies in the following way .
As the main router I have a AHX2 RB1100 and distribution to customers where they do have two radio links . Radio links are from Ubiquity ( 1 link Power beam M5 400 4 km,2 link 4 km link Nanobrige M5-22 full signal to both) . After those two links I have 5 base stations . There have around 80 clients , all chatting PPPoE ! ( use real IPs )
When I load more traffic’s clients that disconnects the load more traffic ! The rate applicable to each client is given 1/8 MB.
I recently purchased a RB3011 and they want to put it in the location where we base stations and want RB3011 to give me quque tree to allocate a band of 40 Mbps , but I want to use their real IP , which would be the solution set up !
Everything is brige .
Thank you!