Confusion over hearing and seeing

I can see things in slow motion and people talk as though they have different emphasis on their words. Singers that I know sound totally different
Have you recently started on any DAs? or has anything else changed around the same time?

parkinson's and pd drugs can interfere with our internal 'clock'

quote: the speed of an internal clock is regulated by the ‘effective’ level of dopamine

one thing the clock does is keep visual and audio information in time. it may be that your brain is working like a tape recorder at the wrong speed.
ps in which case increasing or decreasing drugs might fix it. but not all doctors may be aware of this rather weird line of research.