i have wireless topology like above figure:
i have over than 100Mb UDP and over than 60Mb TCP bandwidth per link , but when i use bandwidth test over all links my bandwidths are 50Mb UDP and 20Mb TCP
what is the problem???
Could you upload photos of the signal strenths and Tx/Rx CCQ of EACH Link?
yes 
all router configured to:
station bridge
router os 6.0rc14
frequency mode are superchannel
wireless protocol nv2 family
and in all links Nstreme enable with best feet frame policy
No route
In the first one and in the second one photos, you have problems with CCQ.
Can you fix them with MANUAL fixing the MCS config?
i fixed it, i have very noise in this link
but my bandwidths are :
udf receive : 100Mb
udp send : 77Mb
tcp receive : 55Mb
tcp send : 60Mb
Lost Packet : avg 1000 [600-1500]
Is your noise from EACH-OTHER?
You HAVE to move away their antennas to “clean” them up
my main problem is:
i have over than 100Mb UDP and over than 60Mb TCP bandwidth per link , but when i use bandwidth test over all links my bandwidths are 50Mb UDP and 20Mb TCP
YES, that is what I’m talking about.
Do a Bandwidth test on the first one (Transmit AND Receive in UDP mode).
During the test, START ANOTHER bandwidth test on the second one ALONE (not involving the first one) and SEE if the first one is LOOSING it’s bandwidth.
Continue with the THIRD one and CHECK the SECOND’S one bandwidth - and final, see on what link is your problem.
You HAVE to do bandwidth test on a SINGLE PAIR per time to see which links fault is. 
ALL Bandwidth test MUST BE DONE in UDP mode AND Transmit PLUS Receive.
(Nv2 + Nstreme ?) Have you tried without - Nstreme?