Metal Gear Solid: Peace Walker

[JohnNobodyPrice]

Hello, for some reason in the mission Armored Vehicle Battle: LAV-Type G vehicle is buggy. It speeds up and slows down randomly. But real problem is that when it stops it floats up, and when I take out some soldiers it deploys more but since the vehicle is floating up when they jump out they sink in the ground and since I need to take them out to complete the mission I can't finish it stealthy. Any help would be appreciated.

Thank you for reading.