Multi-Client for an online game

-The game is "Conquer Online" -Couple weeks ago game clients were run in unlimited clients till they stop this by adding checking the mac address by server side -i just looking for a simple configuration for a virtual network and run the EXE file via this virtual connection -Or addding a network cards and run the EXE file via specific connection that hold another mac address -I can't use VM software because it rain the cpu and ram and cant run the clients well as the host run it ( clients always DC , got a high ping and ofc 3d acceleration is sux)