This only occurs with mission created on Altis map. Players connect and can select role and once mission is started, player may be kicked to desktop or game freezes including host of the mission. This seems to only occur with a mission on the Altis map. Switched to another mission using Stratis with the same players and host, no issues. Tried switching hosts(server) and clients with the same result using the Altis mission.

Contents of appdata and dxdiag

http://not-quite-dead-yet.com/index.php?action=dlattach;topic=175.0;attach=176