Windows Performance

Latest rock pi x installed windows and followed instructions but antivirus still appears in security settings even though I renamed the windows defender directory.  I noticed there was another one called Windows Advanced threat protection.   Also antimalware is running consumes a lot of ram as well can't stop process. I assume this is another directory I need to rename. crawling through the services there are a lot running has anyone been through all of these in terns of what we can shut down (do I really need a print spooler)

Is windows 11 more stream lined on an SBC because windows is really not designed well to run in a small amount of RAM / Slow CPU? Life was so much easier when you just had a config.sys and autoxec.bat file to contend with.