Connection has been lost.

Getting multiple times lately and frequently.

Server: Asia
Coop: Checkpoint

Agreed. Asia has the most disconnections. I've tried on other regions, relatively fine but there's disconnections too.

I notice that my Steam Chat got disconnected frequently too. Maybe this could be the reason why I got connection lost in game too.

Because I also notice my other friends who were playing Monster Hunter World, their party game got disconnected whenever the Steam Chat got disconnected too. Not sure if its related.

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