I've been trying to fix this for a while now and I can't find anything about it online other than it potentially being an audio hardware issue. The playback just keeps pausing itself after a few seconds when I'm trying to play it.
PC Specs: Ryzen 9 3900x
64 GB RAM
And also, here's a picture of my audio hardware settings.
Editing, Error or problem, Freeze or hang, Hardware or GPU
If that doesn't work, try resetting the Workspaces: Reset a workspace Reset the current workspace to return to its original, saved layout of panels. 1. Do one of the following: • Click the Workspace menu icon and select Reset to Saved Layout. • Choose Window > Workspace > Reset to Saved Layout. from here: https://helpx.adobe.com/premiere-pro/using/workspaces.html
If that doesn't work, try Preferences > Audio Hardware and set Input to None.
If that doesn’t work, try updating or rolling back your graphics driver directly from the video card manufacturer’s site. If NVIDIA, do a clean install of the latest Studio Driver (NOT the Game Driver)
If that doesn't work, try creating a new project and import the old one into it.