Balanceo 5 link anda mal

Hola
saludos al foro espero puedan ayudarme, tego 5 adsl que estan ciendo balanceo en una PC solo hace Balanceo y la configuracion es esta versio 2.9.50

/ ip address
add address=172.10.20.1/24 network=172.10.20.0 broadcast=172.10.20.255 interface=Local comment="" disabled=no
add address=200.87.105.99/29 network=200.87.105.96 broadcast=200.87.105.103 interface=Publica comment="" disabled=no
add address=200.87.109.186/29 network=200.87.109.184 broadcast=200.87.109.191 interface=Publica1 comment="" disabled=no
add address=190.129.69.82/27 network=190.129.69.64 broadcast=190.129.69.95 interface=Publica2 comment="" disabled=no
add address=200.87.115.90/29 network=200.87.115.88 broadcast=200.87.115.95 interface=Publica3 comment="" disabled=no
add address=200.87.113.106/29 network=200.87.113.104 broadcast=200.87.113.111 interface=Publica4 comment="" disabled=no

[admin@Balanceador] ip firewall mangle>
/ ip firewall mangle
add chain=prerouting action=mark-connection new-connection-mark=uno \
passthrough=yes connection-state=new in-interface=Local nth=4,6,0 \
comment="" disabled=no
add chain=prerouting action=mark-routing new-routing-mark=Uno passthrough=no \
in-interface=Local connection-mark=uno comment="" disabled=no
add chain=prerouting action=mark-connection new-connection-mark=dos \
passthrough=yes connection-state=new in-interface=Local nth=4,6,1 \
comment="" disabled=no
add chain=prerouting action=mark-routing new-routing-mark=Dos passthrough=no \
in-interface=Local connection-mark=dos comment="" disabled=no
add chain=prerouting action=mark-connection new-connection-mark=tres \
passthrough=yes connection-state=new in-interface=Local nth=4,6,2 \
comment="" disabled=no
add chain=prerouting action=mark-routing new-routing-mark=Tres passthrough=no \
in-interface=Local connection-mark=tres comment="" disabled=no
add chain=prerouting action=mark-connection new-connection-mark=cuatro \
passthrough=yes connection-state=new in-interface=Local nth=4,6,3 \
comment="" disabled=no
add chain=prerouting action=mark-routing new-routing-mark=Cuatro \
passthrough=no in-interface=Local connection-mark=cuatro comment="" \
disabled=no
add chain=prerouting action=mark-connection new-connection-mark=cinco \
passthrough=yes connection-state=new in-interface=Local nth=4,6,4 \
comment="" disabled=no
add chain=prerouting action=mark-routing new-routing-mark=Cinco passthrough=no \
in-interface=Local connection-mark=cinco comment="" disabled=no

/ ip firewall nat
add chain=srcnat action=src-nat to-addresses=200.87.105.99 to-ports=0-65535 connection-mark=uno comment="" disabled=no
add chain=srcnat action=src-nat to-addresses=200.87.109.186 to-ports=0-65535 connection-mark=dos comment="" disabled=no
add chain=srcnat action=src-nat to-addresses=200.87.115.90 to-ports=0-65535 connection-mark=tres comment="" disabled=no
add chain=srcnat action=src-nat to-addresses=190.129.69.82 to-ports=0-65535 connection-mark=cuatro comment="" disabled=no
add chain=srcnat action=src-nat to-addresses=200.87.113.106 to-ports=0-65535 connection-mark=cinco comment="" disabled=no

/ ip route
add dst-address=0.0.0.0/0 gateway=200.87.109.185 distance=1 scope=255 target-scope=10 routing-mark=Dos comment="" \
disabled=no
add dst-address=0.0.0.0/0 gateway=200.87.115.89 distance=1 scope=255 target-scope=10 routing-mark=Tres comment="" \
disabled=no
add dst-address=0.0.0.0/0 gateway=200.87.105.97 distance=1 scope=255 target-scope=10 routing-mark=Uno comment="" \
disabled=no
add dst-address=0.0.0.0/0 gateway=200.87.115.89 distance=1 scope=255 target-scope=10 comment="" disabled=no
add dst-address=0.0.0.0/0 gateway=190.129.69.81 distance=1 scope=255 target-scope=10 routing-mark=Cuatro comment="" \
disabled=no
add dst-address=0.0.0.0/0 gateway=200.87.113.105 distance=1 scope=255 target-scope=10 routing-mark=Cinco comment="" \
disabled=no

esta server solo hace el balanceo nada mas

agradecere su ayuda
actualmente esta trabajando como cuello de botella
resta en ves de sumar

muchas gracias
saludos
Marcelo