Valve reckons it has eliminated latency issues with the Xbox 360 version of Left 4 Dead 2 following a series of tech changes.
"We have upgraded our network infrastructure to better accommodate the huge response to L4D2," the developer wrote on its blog.
"360 players will now have lag-free servers. We've also added more dedicated servers. We will continue to monitor the situation and add resources as needed."
Left 4 Dead 2 came out for PC and Xbox 360 last week, and you can read our review elsewhere on the site.