There are various reasons why this could be happening but because you have not told us anything at all about the computer any analysis would be speculative.
What we can see in your screenshots are that you only have 4GB of RAM.
Download then run
Speccy ( free ) and post the resultant url for us, details
here, this will provide us with information about your computer hardware + any software that you have installed that may explain the present issue/s.
To publish a Speccy profile to the Web:
In Speccy, click
File, and then click
Publish Snapshot.
In the
Publish Snapshot dialog box, click Yes to enable Speccy to proceed.
Speccy publishes the profile and displays a second
Publish Snapshot. You can open the URL in your default browser, copy it to the clipboard, or close the dialog box.