Check the Amount of RAM
Yes, I have MORE than 2 GB of memory.
No, I have 2 GB of memory or less.
Overview
When your computer performs slowly, it might be that the physical memory (RAM) of your computer is not adequate. Windows 10 requires at least 2 gigabytes (GB) of RAM to function and the recommended amount is 4 GB. If you are troubleshooting a slow computer, you should check the amount of RAM installed on the computer.
Checking the Amount of RAM in a Computer
1. Double-click Control Panel on the desktop.
If you do not have Control Panel on your desktop, click here.
2. Click System and Security in the Control Panel window that appears.
3. Click System in the System and Security window that appears.
4. Check the value of Installed memory (RAM) in the System window that appears.
5. Click the 
icon to close the System window.
Summary
While checking for installed RAM, if you find that the capacity of RAM is not adequate to keep your computer running fast, add more RAM to your computer, as described here.