DVD plays ok on PC, choppy on PS2

I rendered my animation at 24fps, 720x480 (16:9) and imported it into Vegas to burn it on a DVD to be played back on a TV. The animation was originally 720x405 as it had to be widescreen but it was automatically adjusted by Vegas. The dvd after being burnt plays smooth if I play it on my PC's DVD drive just as I'd play any other movie. But when I play it on a TV using a Playstation 2 as a DVD player, the video is not smooth. Jerky or choppy - plays for 2 seconds, stops for half a second then plays again. Its like you drive your car, hit the brakes, drive again, hit the brakes...you get the idea. The audio is fine though. I also tried playing other DVD movies (on DVD-R discs) on that playstation2 and they played back smoothly. Here are the video settings I have in Vegas followed by the properties of the .VOB file itself on the burnt DVD. The DVD was burned at 6x speed.

Vegas project settings (Built-in default template):


DVD writer settings in Vegas:


VOB file properties in explorer:

Thank you very much for your advice, John. Basically there were no customization parameters in Vegas for it. But now that you've pointed it out, I think it plays fine on a PC DVD ROM because maybe those drives can read higher data rates. Maybe PS2 cannot. I wonder how a modern standalone DVD player would handle this. By the way, I noticed your website and the Vegas tutorials on it - any chance you could suggest a way to edit the bit rate? I can't seem to change it as the only modifiable parameter was the writing speed.

Hi Nigel,
Yes, that seems to be the only appropriate way to adjust the bitrate. Actually I did not have secondary DVD authoring software so what I did was (in Vegas)go to the Tools Menu > Burn Disc > DVD and then the dialogue box appears where you specify writing properties. Apparently, there isn't a way to control the bitrate using this method of DVD burning.