Davinci Resolve 15.1 (free)

I'm using Resolve 15.1 on a 2017 27" Imac 5K-64 ram, Radeon pro 580 8gb, I-7 4.2 ghz, 1 tb ssd.
When editing audio, it starts normal and a couple of seconds later starts to slow the audio and stutters. I press stop then play it again and it does the same thing. Does it with all audio. Is this something anyone has experienced? and solved
When editing audio, it starts normal and a couple of seconds later starts to slow the audio and stutters. I press stop then play it again and it does the same thing. Does it with all audio. Is this something anyone has experienced? and solved