Good Day RushGM-8863,
My name is Carlo, I am also using Windows 10 pc and community member like you.
Yes, you can safely disable it the services, it will not cause any harm with your computer, you can try the steps posted in the link you shared.
Presentation Font Cache is using a lot of resources, it has something to do with the corrupt font in the cache
Once done, visit this link and perform a cleanboot.
https://support.microsoft.com/en-us/topic/how-t...
Restart and check the usage in the task manager.
Have a wonderful day ahead and stay safe.
Sincerely,
Carlo T.