mp3 playback too fast

Windows 10, Audacity 3.0.2
Project Rate 44100

The project records and plays back correctly, but when I export it to mp3, it plays back at about 2x the recorded speed. I tried multiple players in Windows 10 with the same result. Tried changing the project rate to 22050 with the same result. I don’t know what else to try. Any ideas are appreciated.

:confused: Hmm… What are you recording?