I keep getting notifications in my Windows 10 to

"Optimize your PC.  Run Support Assist now to ensure your PC is up to date and running at it's best."

Thing is, I just did.  I ran all the checks and installed updates from Dell, and Dell tells me I am up to date.

This is a Dell Inspiron 15 5000 Series laptop, running Windows 10, version 1803, 64 bit, and Support Assist 2.2.3.2.