Mikrotik Web proxy

Dear collegues,
I’ve got a question.
On RB751G-2HnD configure PPPoE connection, make masquerade and configured proxy to make accessible it from work.
But I’ve got too many connections in Web Proxy Settings - Connections (about 400 connections) and src is not like in firewall rules.
Here is my configs:

[admin@MikroTik] /ip service> /interface print 
Flags: D - dynamic, X - disabled, R - running, S - slave 
 #     NAME                                TYPE         MTU L2MTU  MAX-L2MTU
 0  R  ;;; WAN
       ether1                              ether       1500  1598       4074
 1  RS ;;; LAN
       ether2                              ether       1500  1598       4074
 2   S ether3                              ether       1500  1598       4074
 3   S ether4                              ether       1500  1598       4074
 4   S ether5                              ether       1500  1598       4074
 5   S wlan1                               wlan        1500  2290
 6  R  DomRU                               pppoe-out   1480
 7  R  bridge1                             bridge      1500  1598
[admin@MikroTik] > /ip firewall nat print 
Flags: X - disabled, I - invalid, D - dynamic 
 0   ;;; Added by webbox
     chain=srcnat action=masquerade to-addresses=0.0.0.0 out-interface=DomRU 
[admin@MikroTik] > /ip firewall filter print 
Flags: X - disabled, I - invalid, D - dynamic 
 0   chain=input action=accept protocol=tcp src-address=192.162.88.128/26 dst-port=36514 
 1   chain=input action=accept protocol=udp src-address=192.162.88.128/26 dst-port=36514 
 2   chain=input action=drop protocol=tcp src-address=0.0.0.0 dst-port=36514 
 3   chain=input action=drop protocol=udp src-address=0.0.0.0 dst-port=36514 
[admin@MikroTik] > /ip proxy print 
                 enabled: yes
             src-address: 0.0.0.0
                    port: 36514
            parent-proxy: 0.0.0.0
       parent-proxy-port: 0
     cache-administrator: webmaster
          max-cache-size: none
   max-cache-object-size: 1KiB
           cache-on-disk: no
  max-client-connections: 1440
  max-server-connections: 1440
          max-fresh-time: 3d
   serialize-connections: no
       always-from-cache: no
          cache-hit-dscp: 4
             cache-drive: system

Version of SW is 6.1. And when I opened some “heavy” sites - like livejournal (with many of pictures) some of pictures doesnt loading. And sometimes pages are not opened - error in Chrome - Data Not Recieved (Error code: ERR_EMPTY_RESPONSE)
Have you got any ideas?