Hi @HannahGoibles
We are sorry for the inconvenience. Please check the McAfee version installed and ensure it is up to date. Also check in task Manager what are the process that consumes high CPU.
Perform the below steps
- Remove unwanted apps from PC
- Clear all temp files
- check windows is up to date
- turn off schedule scan option and perform manual scan when required
Please refer below articles to check if your software is up to date
how to verify that McAfee is up to date
Please feel free to reach our support by contacting on 866-622-3911 or through chat by accessing the below link
Chat Support
Regards
Magesh J