I'm getting the RAM values from Task ManagerWhere are you getting the RAM use % values?
Task Manager and Resource Monitor both provide information about what is using memory and how much memory is being used.
Any recent software additions or updates? Could be a buggy app, or a corrupted OS file.
Another thought: Hard drive(s): Make, model, capacity, how full?
I've already tried to just take a closer look at that, to see if anything is just eating the RAM but everything looks just fineOkay, in Task Manager (Processes tab) and then Resource Monitor go to the applicable Memory tabs and click the column headers so the column data is sorted in descending order.
Key is to discover what is using and consuming memory.
If the problem started with the new software then you may see them listed. Take a closer look.
May not be directly related (meaning the new software has some conflict with other apps) so consider uninstalling the apps and determine if memory use returns to normal.