Premiere pro 23 audio lagging really bad in timeline.

The 'bad' news is, I tried your project and it works just fine. 

I like the 5th take best. 🙂

So, something there is holding you back. Did you clear the cache per Peru Bob's post? That's an important step. It's generally something like that. Of course Laptops are never the greatest. A desktop machine is much preferred if you can.

I'm running a 12th Gen i9, with 64gb, running from an SSD in this case, c: is m.2  drive.

Any things like head up display software running, fan control software, display control software, etc...

The footage is standard AVC UHD

Hi Marcus23230045z7pr!

Sorry about the issue. Let us know if Peru Bob's suggestions help. If you're still having an issue. Please share some sample files with us to test: https://helpx.adobe.com/in/creative-cloud/help/share.html

Thanks,

Kartika

Delete the Media Cache and Media Cache files:
https://community.adobe.com/t5/premiere-pro/faq-how-to-clear-your-media-cache-in-30-seconds-in-premiere-pro-2020/m-p/11017257/thread-id/260446?page=1

If that doesn't work, try resetting the preferences:
https://community.adobe.com/t5/premiere-pro/faq-how-to-reset-trash-preferences-in-premiere-pro/td-p/8236158?page=1

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 installation 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.