I made this map with intentions of random goofery in MP.

The problem is that when You reach a certain altitude it kicks you from the server. At least I think its related to altitude.

single player footage:

Any help would be greatly appreciated.

Yes, probably altitude. If you can access the server anticheat logs they will likely be filled with "UserFlying" flags and autokicks. Several of the standard maps will also kick players for certain locations (standing on the rails in Parking Deck, for example).

Attractive map -- looks like a good place to shoot folks.

Yes, probably altitude. If you can access the server anticheat logs they will likely be filled with "UserFlying" flags and autokicks. Several of the standard maps will also kick players for certain locations (standing on the rails in Parking Deck, for example).

Attractive map -- looks like a good place to shoot folks.

Is it possible to edit it so it doesn't kick players?