Solve issues with low download speed and high ping
Sometimes when you have much client PC your customers will have issues with low download speed or high ping on games when all PCs are used. To resolve this issue you can use QoS on your internet router.
Add all your client PCs by with their MAC address to the router's QoS client list and set a speed limit to the clients if required.
You can follow these links to configure QoS on most popular routers: