OK, Adobe, you have GOT to do better than this!!!

post ai issues in the ai forum etc.

I have also get same problem with in my Imac after updating Illustrator. In some AI files when I open, my system get stuck and after a mintue got black screen and showing relogin.

you can post in the individual forums and see if other ps, ai, id users think that's unusual.

I guess I should say this is on a Windows 10 machine and it is the most current version of all three programs.

that's more reasonable.  see if this gives you any insight, https://community.adobe.com/t5/photoshop-ecosystem-discussions/photoshop-using-75gb-ram-is-this-normal/m-p/15192783

That helped, but they are all still running over 1.5 GB RAM usage each and nothing open.

if the libraries are synced clear your recently opened files list.

And it says Libraries Synced.

Where? The only place I see Sync is in the Creative Cloud App itself.

then each is likely trying to sync something problematic.  see if you can suspend syncing in each.