SLOWNESS & RAM?

Hi all,
I have a mid 2012 MBP with 8gigs ram - lots of slowness recently. So I got this app = Memory Clean.app
- often the app says I have 50 or less MB ram available
- so I click clean memory and it may say 1 or 2 gigs free
- but then a VERY short time later it's back to a few MB's free
Q: So what's the point of - clean memory? computer is still slow... - seems to dump ram when it's needed without app?
- mechanical drive is ok and new (replacement)
How can I speed it up without buying new drives or more ram etc.?

Post the EtreCheck output
<https://discussions.apple.com/docs/DOC-6174>
Mac OS X will attempt to "ALL" your RAM.  Unused RAM is a waste of money.  A lot of the RAM will be used to cache file system data so that expensive disk I/O can be avoided (expensive in BOTH time it takes to access the slow disk and power it takes to spin the disk (where using power reduced the life of your battery)).
Generally speaking Mac cleaner, memory cleaner, anti-malware apps on a Mac cause way more problems they they solve and often time inflict more pain on the user they what they claim they are solving.
The EtreCheck will tell us (and You) what 3rd party additions you have on your system that maybe interfering with your performance.

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