Problem I have been noticing is when using blutooth headphones (Airpods, Airpod pros, Bose bluetooth headphones) the audio on both the timeline and on the source window plays in a buffer-like slomo where the clip plays slower and the pitch is lowered. This happens on my macbook and has happened to others online.
Recreate this bug by connecting bluetooth headphones to a clip with audio and it may appear. Occasiionally it is caused when I coonnect or reconnect the headphones, or if I open another application and play audio on there, or if I utilize pause and play buttons built into the headphones.
I can usually fix buy disconnecting my headphones and restarting premier.
What should happen is for slomo sound not to happen. There is nothing in the timeline to suggest and show that the clip is slowed down.