how to reset RAM usage

[AC Question]

My Tab 2, 10.1 has been running extremely slow, so I cleared all cache and deleted most apps....no change.
So I removed sd card and did a hard reset. There is nothing on it and I did not allow installs of dropbox email etc. It is stripped down as best I could. Still very slow, so I checked what is running using RAM and found 474mb used and only 326 available. This is before ANY apps are installed. The listed running items total 154mb .... so what is using the other 320mb?
thanks,
pt

 

[Golfdriver97]

Welcome to the forums. I checked my Pixel and my Note 5 and the Pixel has about 300 MB for the OS, and the Note about 500 MB. The 'lost' RAM is what the OS reserves for itself.