high kernel_task memory, preview lags and beachballs, mac overheats and safari slow

CPU and RAM running very high. not sure when this started to occur or what i may have changed which has caused this. but my mac is brand new but is constantly running slow and overheating and doing weird things. I have a MacBook Pro (Retina, 13-inch, Early 2015). Basically anytime i use preview it runs horribly slow and lags (for many minutes often requiring a force quit), PDFs can take minutes to open, safari takes much monger to load pages, downloads will finish but take forever to appear on desktop (which is where i save my downloads), screenshots lag to appear on desktop (can take minutes), apps beachball and do not respond (usually occurs with preview and safari but others as well), safari just crashes and disappears sometimes (i do not keep more that 10 tabs open at once), ive done many things to solve this issue but none have worked. in no particular order ..

- simple restart (many times throughout this process)

- reset PRAM and SMC

- installed clean my mac 3 (ran it) then uninstalled the app

- emptied various cache and preference files/folders from library

- emptied cache from safari developer menu

- disabled and uninstalled all plugins and extensions (leaving only adblock, java and adobe reader)

- uninstalled many apps including Flash

- updated all software, apps, extensions ext.

- went to disk utilities and performed "fix aid"

- performed backup on time machine to free up more space

- optimized iCloud storage and deleted many files from iCloud

- I disabled Safari DNS prefetching in terminal (i think???) (i typed some script into terminal, with apparent change afterwards)

- I updated to macOS 10.3.1 High Sierra

so far the best thing i did was delete as many documents from my Macintosh HD as possible that seems to have solved the high CPU problem (which was running at 97-100% constantly) and has made the overall lag time a little more bearable but memory is still running at 1GB all the time and I still having many of the aforementioned functional issues.

here is the report from etrecheck ..

let me know what you guys think.

thanks,

Zach

EtreCheck version: 3.4.6 (460)

Report generated 2017-11-12 03:00:26

Download EtreCheck from https://etrecheck.com

Runtime: 2:43

Performance: Excellent

Click the [Lookup] links for more information from Apple Support Communities.

Click the [Details] links for more information about that line.

Problem: No problem - just checking

Hardware Information: ⓘ

MacBook Pro (Retina, 13-inch, Early 2015)

[Technical Specifications] - [User Guide] - [Warranty & Service]

MacBook Pro - model: MacBookPro12,1

1 2.7 GHz Intel Core i5 (i5-5257U) CPU: 2-core

8 GB RAM Not upgradeable

BANK 0/DIMM0

4 GB DDR3 1867 MHz ok

BANK 1/DIMM0

4 GB DDR3 1867 MHz ok

Handoff/Airdrop2: supported

Wireless: en0: 802.11 a/b/g/n/ac

Battery: Health = Normal - Cycle count = 672

iCloud Quota: 143.51 GB available

Video Information: ⓘ

Intel Iris Graphics 6100 - VRAM: 1536 MB

Color LCD 2560 x 1600

Disk Information: ⓘ

APPLE SSD SM0256G disk0: (251 GB) (Solid State - TRIM: Yes)

[Show SMART report]

EFI (disk0s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB

(disk0s2) <not mounted> [APFS Container]: 250.79 GB

USB Information: ⓘ

USB30Bus

Western Digital My Passport 0748

My Passport 0748 disk2: (500.07 GB)

(disk2s1) <not mounted> [partition_map]: 32 KB

My Passport for Mac (disk2s3 - Journaled HFS+) <not mounted> : 499.94 GB

Broadcom Corp. Bluetooth USB Host Controller

Thunderbolt Information: ⓘ

Apple Inc. thunderbolt_bus

Virtual disks: ⓘ

Macintosh HD (disk1s1 - APFS) / [Startup]: 250.79 GB (81.04 GB free)

Encrypted: Yes (Unlocked)

Physical disk: disk0s2 250.79 GB (81.04 GB free)

(disk1s2) <not mounted> [Preboot]: 250.79 GB

Physical disk: disk0s2 250.79 GB

(disk1s3) <not mounted> [Recovery]: 250.79 GB

Physical disk: disk0s2 250.79 GB

(disk1s4) /private/var/vm [VM]: 250.79 GB

Physical disk: disk0s2 250.79 GB

System Software: ⓘ

macOS High Sierra 10.13.1 (17B48) - Time since boot: about 3 hours

Gatekeeper: ⓘ

Mac App Store and identified developers

System Launch Agents: ⓘ

[not loaded] 8 Apple tasks

[loaded] 164 Apple tasks

[running] 115 Apple tasks

[killed] One Apple task

one process killed due to insufficient RAM

System Launch Daemons: ⓘ

[not loaded] 33 Apple tasks

[loaded] 179 Apple tasks

[running] 116 Apple tasks

[killed] 2 Apple tasks

2 processes killed due to insufficient RAM

Launch Agents: ⓘ

[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a2 3d420d.plist (Adobe Systems, Inc. - installed 2017-02-16) [Lookup]

[loaded] com.oracle.java.Java-Updater.plist (? 43da516f 72ac4dde - installed 2017-11-11) [Lookup]

Launch Daemons: ⓘ

[loaded] com.adobe.ARMDC.Communicator.plist (Adobe Systems, Inc. - installed 2017-02-16) [Lookup]

[loaded] com.apple.installer.osmessagetracing.plist (Apple, Inc. - installed 2017-10-25)

[running] com.macpaw.CleanMyMac-setapp.Agent.plist (MacPaw Inc. - installed 2017-11-12) [Lookup]

[loaded] com.microsoft.office.licensingV2.helper.plist (Microsoft Corporation - installed 2016-07-09) [Lookup]

[loaded] com.oracle.java.Helper-Tool.plist (Shell Script e3fefdd2 - installed 2017-09-05) [Lookup]

User Launch Agents: ⓘ

[running] com.spotify.webhelper.plist (Spotify - installed 2017-11-10) [Lookup]

Internet Plug-ins: ⓘ

AdobePDFViewerNPAPI: 17.012.20098 (installed 2017-11-11) [Lookup]

QuickTime Plugin: 7.7.3 (installed 2017-11-11)

AdobePDFViewer: 17.012.20098 (installed 2017-11-11) [Lookup]

JavaAppletPlugin: Java 8 Update 151 build 12 (installed 2017-11-11) Check version

Safari Extensions: ⓘ

[enabled] AdBlock - BetaFish, Inc. - https://getadblock.com (installed 2017-10-25)

[enabled] Adblock Plus - Eyeo GmbH - https://adblockplus.org/ (installed 2017-10-25)

3rd Party Preference Panes: ⓘ

Java (installed 2017-11-11) [Lookup]

Time Machine: ⓘ

Skip System Files: NO

Auto backup: YES

Volumes being backed up:

Macintosh HD: Disk size: 250.79 GB Disk used: 169.75 GB

Destinations:

My Passport for Mac [Local]

Total size: 499.94 GB

Total number of backups: 3

Oldest backup: 2017-03-02, 7:05 PM

Last backup: 2017-11-12, 1:58 AM

Size of backup disk: Too small

Backup size 499.94 GB < (Disk used 169.75 GB X 3)

Top Processes by CPU: ⓘ

16% mdworker

15% mdworker

11% kernel_task

7% accountsd

7% com.apple.WebKit.WebContent

Top Processes by Memory: ⓘ

965 MB kernel_task

935 MB Safari

300 MB mds_stores

293 MB cfprefsd

258 MB com.apple.WebKit.WebContent

Top Processes by Network Use: ⓘ

Input Output Process name

177 MB 209 MB accountsd

817 KB 60 KB mDNSResponder

74 KB 51 KB apsd

97 KB 9 KB com.apple.WebKit.Networking

28 KB 9 KB netbiosd

Top Processes by Energy Use: ⓘ

11.48 com.apple.WebKit.WebContent

11.10 cfprefsd

9.16 Safari

7.12 accountsd

4.94 WindowServer

Virtual Memory Information: ⓘ

2.73 GB Available RAM

42 MB Free RAM

5.27 GB Used RAM

2.69 GB Cached files

95 MB Swap Used

Software installs (last 30 days): ⓘ

Adobe Pepper Flash Player: (installed 2017-10-16)

Java 8 Update 151: (installed 2017-10-18)

Adobe Flash Player: (installed 2017-10-24)

inPicture: 1.1 (installed 2017-10-25)

Adobe Flash Player: (installed 2017-10-26)

Adobe Pepper Flash Player: (installed 2017-10-26)

Mediunic: 1.5 (installed 2017-10-27)

DeskApp for YouTube: 1.1 (installed 2017-10-29)

MiniPlay: 1.4.1 (installed 2017-10-29)

PDF Browser Plugin: (installed 2017-10-30)

Blogo: 3.2.8 (installed 2017-10-30)

PDF Printer Lite: 2.0.2 (installed 2017-11-01)

PhotoScape X: 2.6.3 (installed 2017-11-09)

Easy New File Creator: 2.2 (installed 2017-11-09)

Freshmac: (installed 2017-11-10)

Memory Cleaner: 2.5 (installed 2017-11-11)

Install information may not be complete.

Diagnostics Events (last 3 days for minor events): ⓘ

2017-11-11 23:27:29 Last shutdown cause: 3 - Hard shutdown