The Resident Evil 6 LAN fix enables two PCs to talk to each other locally, but it does not unlock splitscreen. For that, you would need a separate "Splitscreen Mod" (which uses a second controller and forces the game to render two viewports). These two mods are separate.
When you clicked "LAN" in Resident Evil 6 , the game promised a direct peer-to-peer connection without routing through the internet. In theory, this meant lower latency and no server downtime. resident evil 6 lan fix fix