Premiere elements 2020: Low quality in part of the project

[Nuria5C51]

I finished edditing my project, added music (using a mobile phone video screen recorder and leaving only the music to show in the time line), rendered the project and something happened as now the first two minutes of the project appear on poor quality. There is a green line on the time line just above the poor quality section. The rest of the time line has got an orange line and it plays in good quality. All video quality settings look to be on high. Tried multiple things but getting nowhere. Any suggestions? Thank you.

[Steve Grisetti]

Timeline playback is merely a preview of your video. It's not how your final video will look. Your finished output will look great.

The orange line indicates a need to render your timeline for smooth playback. (It may not be serious enough in your case to require it.) But rendering your timeline (by pressing your keyboards Return/Enter key) will turn the orange line green and give you a cleaner, smoother preview.

This timeline render sometimes produces a low quality preview. But you can set it to produce a higher quality preview by going to the program's preferences (under the Edit menu on a PC) and changing the timeline render quality. 

Although, as I said, this is just a preview in any event. It has nothing to do with how your final output will look.

[Nuria5C51]

Steve,

Thank you. You were right as usual. Thanks a lot 🙂

[Peru Bob]

 There is a green line on the time line just above the poor quality section. The rest of the time line has got an orange line and it plays in good quality. 

By @Nuria5C51

Did you mean the reverse of what you typed?

[Nuria5C51]

Peru,

Nope, I know it sounds strange but the green line part was the one showing poor quality when playing the preview. However, as Steve said all gets sorted once the final file is exported.