Hi, I'm having an issue with using multiple mice and keyboards as well. I recently bought a new keyboard/mouse, the Logitech MK710, which has a Unifying device that plugs into my computer. In case you don't know what that is, it means that the keyboard and mouse hook up wirelessly to the same device which is plugged into a single USB port. Before I bought this new keyboard, I was able to use a regular USB keyboard and regular USB mouse with an additional input of an XBox 360 controller and the game worked great.
Now, the inputs are all screwy. The mouse works just fine in Windows, and when I launch the game (I have the latest Steam version) the mouse stops responding; as in, the mouse just freezes on the screen and will not move. The keyboard and mouse just do not respond so I cannot play the game single player. I plugged in an additional mouse and keyboard to attempt playing multiplayer, and here is where everything gets *really* screwed up. I configured Player 1 to use Mouse/Keyboard 1, Player 2 to use Mouse/Keyboard 2, but there is also a 3rd input, even though I only have 2 keyboards and 2 mice plugged in. So player 3 is inadvertently set up with Mouse/Keyboard 3.
I start the game and here is what happens:
-Player 1 cannot be controlled with the keyboard at ALL. Mouse 1 controls player 1's cursor.
-Player 2 can be controlled with the additional mouse and keyboard set up for Player 2.
-Player 3 can be moved with the Keyboard 1 input, and the mouse cursor does not move.
I push Esc on the Keyboard 1, and the game pauses. Moving the mouse (Mouse 1) does not show a cursor, instead, I am shown a highlighted word when the mouse moves over the item that can be selected. In other words I have to work incredibly hard just to return to the menu.
Once I got back to the menu, I reconfigured the controllers. This time, I set player 1's controls to Mouse/Keyboard 2 (the set that worked before above) and set player 2's controls to Mouse/Keyboard 3 and player 3's controls to Mouse/Keyboard 1. Start the game again. This time, NONE of the keyboards work, and only the mouse cursors are able to be moved. Mouse 2 controls Player 2, and Mouse 1 controls player 3.
What on Earth is happening that the inputs are so messed up?! I love playing this game, but right now this game is utterly unplayable in its current state for me.
Graphics are a non-issue here, I can run everything on full blast, and it never lags. I have Windows 7 with the Steam version of the game, and I would very much appreciate some assistance with resolving this issue!