Directx problems

[IsaacMSs]

I'm having a problem with directx options, like, when i start the game with directx take 5 to 7 minutes to load, then when i go enter in a mission, it keeps loading for what seems to be again 5 to 7 minutes, but, the loading bar keeps froze, when it finaly begins to go up, the game say that i lost connection to the host and cant enter the mission because i took so long loading the match that the game choose another player to go instead of me, and its not something that happens rarely, it happens all the time that i use the directx10, i know there's directx 9, and is the best option to my notebook (yeah a notebook) to play the game, don't get me wrong, the directx 10 runs in better quality and performace, but it has this error, also, my notebook doesn't run directx 11. so yeah