If you think you have sufficient RAM on your computer but experiencing slowness and other issues, you might want to test your RAM for memory problems. We had a similar situation when we installed another RAM on an existing slot.
On Windows, you can use the Windows Memory Diagnostics Tool to check memory problems.
Step 1: Open the Start Menu and type in mdsched.exe or Wondows Memory Diagnostics, then press enter.
Step 2. A pop-up will appear on your screen: Select the first option to restart your machine and check the memory right now, and the second option to check next time on reboot.
Step 3: Your computer will load a blue screen that shows the progress of the check.
Watch the memory diagnostic tool for errors. If there are no errors, then your RAM may not be causing any issues. You may focus on investigating other hardware or software issues.