This script adjusts download (to wired and wireless clients) speed only.

QoS enabled firmware! You have to recompile firmware with CONFIG_FIRMWARE_INCLUDE_QOS=y and CONFIG_FIRMWARE_INCLUDE_IMQ=y first!

• Disable hardware acceleration at WAN WebUI page.
• Assign IP addresses for chosen clients manually at LAN > DHCP server > Manually Assigned IP around the DHCP List page.
• Download shaper script from console and make it executable:

wget --no-check-certificate -O /etc/storage/shaper.sh https://raw.githubusercontent.com/DontBeAPadavan/simple-shaper/master/etc/storage/shaper.sh
chmod +x /etc/storage/shaper.sh

• Edit /etc/storage/shaper.sh for your needs.
• Add following line to Run After Router Started field at Customization > Scripts WebUI page:

/etc/storage/shaper.sh

• Reboot router or (re)start shaper manually:

/etc/storage/shaper.sh