Since 4.1 you can set split screen mode in Edit → Project Settings → Maps & Modes → Local Multiplayer
In 4.0 you need to create custom viewport client class in C++ and override UpdateActiveSplitscreenType() so it returns Splitscreen enum None
Since 4.1 you can set split screen mode in Edit → Project Settings → Maps & Modes → Local Multiplayer
In 4.0 you need to create custom viewport client class in C++ and override UpdateActiveSplitscreenType() so it returns Splitscreen enum None