Well I hear most people saying Nero is s**t because its so slow. The reason being that it makes the file bigger to take up the whole dvd and not to waste space.
Here is a quick little guide I made to help you speed it up slightly!
1. Open up Nero Vision. It should come up with a screen like so :

2. Hit DVD Video and add your video file. In my case it is Wanted (Thanks NikonXP)
It should look like this.

3. Move your cursor over and click the "More" button. The next screen should open :

4. Then move your cursor and click on the "Video Options" button. It should come up with something like :

Click on the DVD-Video tab and change the settings as highlighted. I used the 5.1 sound settings as I have a 5.1 setup. This is optional if you don't want to have 5.1
Click on OK and carry on how you normally would make the movie.
Enjoy!
Here is a quick little guide I made to help you speed it up slightly!
1. Open up Nero Vision. It should come up with a screen like so :

2. Hit DVD Video and add your video file. In my case it is Wanted (Thanks NikonXP)
It should look like this.

3. Move your cursor over and click the "More" button. The next screen should open :

4. Then move your cursor and click on the "Video Options" button. It should come up with something like :

Click on the DVD-Video tab and change the settings as highlighted. I used the 5.1 sound settings as I have a 5.1 setup. This is optional if you don't want to have 5.1
Click on OK and carry on how you normally would make the movie.
Enjoy!