Mouse isn't synchronized in one random instance

Just started using ISboxer with 4 chars, with 2 it worked perfect, but when i tried with 4 chars, mouse isn't sinchronized in one random instance, i already checked resolutions, all the same.

After some trys, i've discovered in the main menu, before logging, the mouses are good, but when start a game, one of the instances are like 2 or 3 cm different.

I would appreciate if someone could help me, i'm really desperate.

In all pics, i'm pointing the middle of the screen.





As you can see, same place, just clicked on broadcasting, and the mouse move to left.


After a few seconds, the third instance star working, but the second one..



Now the second one work, but, first and third don't.

[lax]

What windowed/fullscreen mode are they in? Are they all in the same mode? (They should be) Can you try a different setting? ISBoxer will window it regardless of this setting, but game may behave differently depending on the setting. After changing this setting in the game you should re-launch.

I am also having this problem Im running 4 windows and they are all out of sync. Everything is fine up until joining a game when all three "follower" windows all go off in different directions. ive changed the settings on all the the windows to be the same. What am I missing?