Laptop high memory usage problem?

[Shannon]

Internet browsers will eat up your memory very fast. The scvhost is windows way of doing background updates for programs, so this too takes a lot of memory.

I remember an old virus program we had that sincerely lagged our system. I honestly would look into uninstalling your new program and getting something lighter. You might want to make sure this the issue first by turning off all antivirus software and seeing it improves. Some virus programs are so loaded to filter every click, every page, every breath your computer makes, that you can imagine how it is loading it down, even if it is not using memory.