I've made a 5 story tower to be played with zombie, but to make it that height on foundry i had to reduce the floor size to roughly that of a wire spool. I have currently, for the humans (defenders) placed 3 starting points, but they still spawn outside, would that have anything to do with the height of the area, i have moved a few things around. I have noticed that it doesn't happen with two players, do i need taller roofs, more starting points, any feedback would be appreciated. After dinner I'm gonna try getting out 4 controllers and seeing if it happens then.
Are you able to turn from Monitor, to Human in the building, with out being moved? Do you have the starting points deleted, that are usually on the map? Do you have the respawn team set right?
Make sure you set the gametype to slayer or w/e your gametype is and you delete the stating points outside of the map. Make sure you then put some starting points in the tower to. Good luck.