mac pro 4.1 early 2009 el capitan vs high sierra OS performance

This item:

Launchd: ~/Library/LaunchAgents/com.google.keystone.xpcservice.plist

Executable: ~/Library/Google/GoogleSoftwareUpdate/GoogleSoftwareUpdate.bundle/Contents/Resources/Google

SoftwareUpdateAgent.app/Contents/MacOS/GoogleSoftwareUpdateAgent -runMode xpchost

Details: Restrictive config permissions - possibly adware

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These items are missing components, so they cannot be operating properly:

Clean up:

/Library/LaunchAgents/com.xrite.colormunkid.plist

/Library/Frameworks/XRiteColorCore.framework/Versions/A/Resources/colormunkid

Executable not found

/Library/LaunchDaemons/com.teamviewer.teamviewer_service.plist

/Applications/TeamViewer 8/TeamViewer.app/Contents/Resources/TeamViewer_Service

Executable not found

/Library/LaunchAgents/com.teamviewer.teamviewer.plist

/Applications/TeamViewer 8/TeamViewer.app/Contents/MacOS/TeamViewer

Executable not found

/Library/LaunchAgents/com.teamviewer.teamviewer_desktop.plist

/Applications/TeamViewer 8/TeamViewer.app/Contents/Resources/TeamViewer_Desktop

Executable not found

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System Preferences > Users&Groups [ Login Items ]

This list is way too long. You have gone EVEERYTHING favorable status, and the result is that NONE get it, your Mac is overall slow. Elect each item in the list and press the [-] delete button below the list to remove them:

I suggest you use the program created by Etresoft, a frequent contributor.  It will provide a snapshot of your system which we can analyze to possibly determine the cause of your problem. Please use copy and paste as screen shots can be hard to read. On the screen with Options, please open Options and check the bottom 2 boxes before running. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown.

https://itunes.apple.com/us/app/etrecheck/id1423715984?mt=12

Use the Add Text button to include the Etrecheck report in your reply.

OK, well it's not insufficient RAM. Do as Allan suggests and run an Etrecheck report.

the "clean Up" group can be deleted while Etrecheck is open with buttons nearby.

The unsigned item that is a problem shows its directory. Copy and paste the entry into:

Finder > Go Menu > Go to folder and it should take you there immediately. then delete the item in question.

The directory for use in Go to Folder:

~/Library/LaunchAgents ( this says tilde [~] for current user, Library folder, LaunchAgents sub-folder )

the file:

com.google.keystone.xpcservice.plist

.

How much RAM do you have?

Thanks

There is a problem with that report. Please try again.

and now that you 'took out some of the junk' does it "feel" faster?