Sorry that Photoshop is displaying less available memory even though it is allocating 100% of it.
I have couple of questions to better diagnose the issue:
- How much free space do you have on your primary harddrive?
- The RAM usage and available memory could be reported wrong by system info, Could you please post a screenshot of Task manager in Windows showing the memory used by Photoshop while it is editing/processing an image?
My computer's CPU usage is normal, even using Photoshop and Illustrator simultaneously. The really weird thing is this Photoshop memory limit for no apparent reason.
I am almost relating this to the upgrade from Windows 10 to version 1803, which I did still in the Inside Program.