The clips on the timeline can not be selected or moved etc. until I let the movie run for a bit (just one sec. is enough.) I have tried to reboot and deleted all chache memory. I did make a mistake and placed one clip on top of another on the timeline before this error occured, I think this caused it but I am not sure. Its Win10 gtx3060-card with 12gb.
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.