Wireless Nv2 Problem over Clients

Hey all, i have a strange problem with the Nv2 protocol, i have the following network:

LAN1___SEXTANT1-5HnD—SXTG-5Hnd___RB750___RB411 w/R52Hn&SectorAntenna—SEXTANT2-5HnD__LAN2

Legend:
---- Wireless
____Wired

Between the two SEXTANT-5HnD i got a bandwidht of 30 Mbps, that is fabulous, but doing a test with btest tool from LAN2 to SEXTANT1 i got like 6240kbps with tcp protocol (and test it transfering files too), if i change it to nstreme i got 26 Mbps, between LAN2 and SEXTANT1, doing some test if i put the first link with nv2 and the second link with nstreme i got 14Mbps, so the conclusion is for every nv2 link used the bandwidht is halved, and this is freaking strange, i use nv2 because of its stability on the links, the 2nd link is like 10 Km and have connected 2 antennas, with nv2 the link lifetime was like 2 weeks without a disconnect, with nstreme it disconnect over 20h.

All interfaces are bridged and tested on Routeros 5.24, and the test i did was with tcp protocol, with udp it gets the 30Mbps from LAN2 to SEXTANT1.

So if anyone have a suggestion, its welcome.

BR

Requium

Anyone?? support?

Update: Tested with SXT----Omnitik----SXT----Omnitik—Lan

Got the same results with tcp bandwidth test from lan to SXT, 1024k, nstreme is like 12M.

BR
Requium