1 mono track exports to one side, warbled

Hi, I am exporting one track of electric bass – recorded in Mono, sounds great playing back in Audacity.
Levels never hit red, but are nice and high in the green
The track says Mono, 44.1k, 32-bit float

No matter what format or settings I export this track to as a file on the same computer, it plays only on one side of my headphones and is warbly, popping in and out.

I have done this deleting all other tracks, exporting selected audio with the others in tact.

At a complete loss. I could screen cap how clean and full it sounds in audacity followed by the unusable export if it would help. So far the searches I’ve found on this issue have related to it being stereo or mixing issues.

Thanks