On official server's I have slow motion gameplay.

This is fine. As suspected your system cant handle the load. 

Go to this thread: 

https://forums.ea.com/discussions/battlefield-6-technical-issues-en/bf6-share-your-experience-hitreg-rubberbanding-and-connection-icons/12977265

And post your YT Link and your DXDiag there.

The EA People are gathering information in this thread. 

While we can keep trying to discuss / to fix your problem here. 

By the first look at your specs in the DXDiag it looks like your Notebook is slightly under the minimum required specs. And given that it is a notebook there might also be some CPU clocking problems.