Download Limit: but can't over come download managers

This is my pcq setting i have, but 2 users can’t be defeated by their methods of downloading - probably D-Managers

/queue type add name="PCQ_UP" kind=pcq  pcq-rate=0 pcq-limit=50 pcq-classifier=src-address pcq-total-limit=2000
/queue type add name="PCQ_DN" kind=pcq  pcq-rate=0 pcq-limit=50 pcq-classifier=dst-address pcq-total-limit=2000



/ip firewall mangle add chain=forward protocol=tcp action=mark-connection new-connection-mark=new_conn passthrough=yes disabled=no
/ip firewall mangle add chain=forward protocol=tcp action=mark-packet new-packet-mark=AA1 connection-mark=new_conn connection-bytes=0-1024 passthrough=no  disabled=no
/ip firewall mangle add chain=forward protocol=tcp action=mark-packet new-packet-mark=AA2 connection-mark=new_conn connection-bytes=1025-8192 passthrough=no  disabled=no
/ip firewall mangle add chain=forward protocol=tcp action=mark-packet new-packet-mark=AA3 connection-mark=new_conn connection-bytes=8193-16384 passthrough=no  disabled=no
/ip firewall mangle add chain=forward protocol=tcp action=mark-packet new-packet-mark=AA4 connection-mark=new_conn connection-bytes=16385-32768 passthrough=no  disabled=no
/ip firewall mangle add chain=forward protocol=tcp action=mark-packet new-packet-mark=AA5 connection-mark=new_conn connection-bytes=32769-65536 passthrough=no  disabled=no
/ip firewall mangle add chain=forward protocol=tcp action=mark-packet new-packet-mark=AA6 connection-mark=new_conn connection-bytes=65537-131072 passthrough=no  disabled=no
/ip firewall mangle add chain=forward protocol=tcp action=mark-packet new-packet-mark=AA7 connection-mark=new_conn connection-bytes=131073-262144 passthrough=no  disabled=no
/ip firewall mangle add chain=forward protocol=tcp action=mark-packet new-packet-mark=AA8 connection-mark=new_conn connection-bytes=262145-0 passthrough=no  disabled=no



/queue tree add name="DN_AC"     parent=C-Wireless     packet-mark=""  limit-at=0    queue=default priority=8 max-limit=2048000 burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="DN_C1"     parent=DN_AC          packet-mark=AA1 limit-at=1024 queue=PCQ_DN  priority=1 max-limit=262144  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="DN_C2"     parent=DN_AC          packet-mark=AA2 limit-at=1024 queue=PCQ_DN  priority=2 max-limit=262144  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="DN_C3"     parent=DN_AC          packet-mark=AA3 limit-at=1024 queue=PCQ_DN  priority=3 max-limit=262144  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="DN_C4"     parent=DN_AC          packet-mark=AA4 limit-at=1024 queue=PCQ_DN  priority=4 max-limit=262144  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="DN_C5"     parent=DN_AC          packet-mark=AA5 limit-at=1024 queue=PCQ_DN  priority=5 max-limit=262144  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="DN_C6"     parent=DN_AC          packet-mark=AA6 limit-at=1024 queue=PCQ_DN  priority=6 max-limit=262144  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="DN_C7"     parent=DN_AC          packet-mark=AA7 limit-at=1024 queue=PCQ_DN  priority=7 max-limit=262144  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="DN_C8"     parent=DN_AC          packet-mark=AA8 limit-at=1024 queue=PCQ_DN  priority=8 max-limit=2048000 burst-limit=0 burst-threshold=0 burst-time=0s disabled=no



/queue tree add name="UP_UU"     parent=A-WAN          packet-mark=""  limit-at=0    queue=default priority=8 max-limit=256000 burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="UP_U1"     parent=UP_UU          packet-mark=AA1 limit-at=1024 queue=PCQ_UP  priority=1 max-limit=64000  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="UP_U2"     parent=UP_UU          packet-mark=AA2 limit-at=1024 queue=PCQ_UP  priority=2 max-limit=64000  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="UP_U3"     parent=UP_UU          packet-mark=AA3 limit-at=1024 queue=PCQ_UP  priority=3 max-limit=64000  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="UP_U4"     parent=UP_UU          packet-mark=AA4 limit-at=1024 queue=PCQ_UP  priority=4 max-limit=64000  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="UP_U5"     parent=UP_UU          packet-mark=AA5 limit-at=1024 queue=PCQ_UP  priority=5 max-limit=64000  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="UP_U6"     parent=UP_UU          packet-mark=AA6 limit-at=1024 queue=PCQ_UP  priority=6 max-limit=64000  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="UP_U7"     parent=UP_UU          packet-mark=AA7 limit-at=1024 queue=PCQ_UP  priority=7 max-limit=64000  burst-limit=0 burst-threshold=0 burst-time=0s disabled=no
/queue tree add name="UP_U8"     parent=UP_UU          packet-mark=AA8 limit-at=1024 queue=PCQ_UP  priority=8 max-limit=256000 burst-limit=0 burst-threshold=0 burst-time=0s disabled=no

any help so that these users can’t eat the most of the band?
at the same time, i do want them to have full speed if no one else is logged in.

thanks,