I have no idea what's happening. Try producing to a different profile (Use the Profile Analyzer on the Produce page and pick one of the suggested ones).

You can also try producing without using your system's GPU by unchecking the Fast video rendering technology option. You may also need to uncheck Hardware Decoding from the Preferences | Hardware Acceleration menu.

If any of those solve the problem, please share the DxDiag test results as described in the Read Me Before Posting guide so we can see how your computer is configured.

Thanks. I used the profile analyzer, which I wasn't even aware of before. It said to put it down from 60 to 40. This worked. However, can you help me with a new problem? Everything on the timeline looks and sounds great, just the way I want it. But when I go to produce an MP4 video, about halfway through in the produced MP4 video, one song, and one song only is distorted (sounds the same as when the base is too loud on speakers, and results in awful distorted sound). The rest of the MP4 is great...video and sound, but this one song is awful. I tried removing the song from the timeline and then replacing it with the same song. However, the results were identical. I also tried producing the video to a different drive, but that didn't change anything. I have never had this type of problem before.

Look forward to your answer.

Thanks,
Dave Penque

OK, one more piece of information. I switched two songs in their locations on the timeline, one being the distorted one. In its new spot, the distorted one was still distorted in the MP4 I produced. In the timeline, the same song plays with no distortion whatsoever. I hope this bit of info helps a little.
Thanks,
Dave

That last piece tells me this post may solve your issue.

Hi. I solved the problem. The original song that would distort as an MP4 was downloaded from YouTube. Tonight, I downloaded the same song from Amazon, imported it, and it played fine in the MP4 video with no distortions. Still, what I don't understand is why the original would play fine on the timeline, but become distorted when it was made into the MP4 video.

Thanks for your help!