Choppy Audio on Cut Page Timeline

I am using clips from the Resolve 16 Introductory Traning exercises, Lesson 1 Quick To Cook.
When playing source clips in the viewer, the audio plays fine, however when playing the Timeline (in the Cut Page) the audio is choppy and difficult to hear.

What about on Edit and Fairlight?

Edit Page and Fairlight Pages both have Choppy Audio when playing Timeline. Playing Source Clips in Edit play correctly.

Problem resolved.The clips were 29.97 frames per second but I had my Playback framerate set to 25 Frames per second! I assumed that I needed to do that to play on my TV at 1080 50i