With a 1080 card you should not have to crank down the graphics.
Could I see a DXDIAG output from that computer? No need to post the data, just attach the file to a post. Thanks.
We have had so many inconsistent reports about the Fall Creator Update and how it manifests issues. Some computers seem to be okay, while others do not. Microsoft has acknowledged there are problems with the Fall Creator Update. The only way, I know of, to repair the damage it may have caused is to do a roll-back to the version of Windows 10 before the update.