Try it at 2.4x, using ImgBurn.
I prefer to rip to the hard drive as an ISO when burning to dual layer dvds, but if you already ripped in file mode rather than an ISO, you can use ImgBurn in Build mode to burn the movie. It will automatically try to set the layer break in the optimal point. But the layer break isn't the problem with your menu. Burning at a slower speed may be one of the few options left.
ImgBurn is the only burning program I use for dual layer disks now, and is widely recommended over Nero for this purpose.
I don't know about your LG drive, but many drives will bitset a DVD +R DL to DVD-Rom automatically. And bitsetting a +R DL disk is definately recommended for best compatibility. Maybe someone else who knows LG drives will pitch in and say if yours does this.