Mikrotik Webproxy and Unlimited speed for cache contents

This is my configuration for Mikrotik Webproxy and Unlimited Speed for cache contents to the clients.

/ip proxy
set always-from-cache=yes cache-administrator="ACE Network Pvt. Ltd." \
    cache-hit-dscp=4 cache-on-disk=yes enabled=yes max-cache-size=5242880KiB \
    max-client-connections=1000 max-fresh-time=3d max-server-connections=1000 \
    parent-proxy=0.0.0.0 parent-proxy-port=0 port=9090 serialize-connections=\
    no src-address=0.0.0.0

/ip firewall mangle
add action=mark-packet chain=output comment=Cache disabled=no dscp=4 \
    new-packet-mark=cache-hits passthrough=no

/queue tree
add burst-limit=0 burst-threshold=0 burst-time=0s disabled=no limit-at=0 max-limit=0 name="proxy cache" packet-mark=\
    cache-hits parent=global-out priority=8 queue=default