I'm not at home where I have Elements loaded but here's a couple of suggestions.

1. Elements has an anti flicker switch. Search the help file and it will point you in the right direction.

2. If that doesn't work you could try and reduce the resolution of your pics. You're basically trying to show really high resolution stuff on a low resolution TV. It doesn't like it that way is my understanding.

3. Re-do your titles but make sure you keep the writing in the "safe area". Your PC and TV displays are different. By keeping in the safe area you more or less ensure that your TV will display things as you want them. One of the menus in the main title screen will allow you to switch on the safe area and adjust its size if necessary.

Hope this helps