iMac is slowing down network for all devices

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Level 1

14 points

iMac is slowing down network for all devices

I have an iMac using OS 10.13.6 and get our internet from AT&T. The connection started slowing down this past Monday, I think. It may have been slow before that but it became annoyingly obvious Monday. On Thursday a

U-Verse tech came out to switch us to a new box (unrelated to my problem, just an equipment upgrade). When he was done and he saw the service was so slow, he changed out the router to no avail. He disconnected my iMac from the network and the speed was at 15 but when he reconnected the computer is slowly dropped down to somewhere around 3.

Nothing I've tried worked but when I log into another user name the problem stops. So is this an app problem and if so, could you tell me how to fix this with as little pain as possible? My knowledge of computers is turning it on, logging in and clicking on all those cute little icons. I would be grateful for any advice.

Posted on Aug 4, 2018 10:51 AM

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Answer 1

Best reply

Cutekylie

Level 1

83 points

Aug 4, 2018 10:55 AM in response to smrat

Hi, smrat! My name is Kylie! (You can call me Ky)

I'm new here to Apple Communities!! 🙂

Maybe try this: https://support.apple.com/kb/PH25536?locale=en_US

Best of luck, smrat!

Love,

Kylie

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Answer 2

smrat Author

Level 1

14 points

Aug 7, 2018 6:10 AM in response to babowa

Thank you, I shall do that. In the meantime, I created a new user and transferred a few necessary files to it and it's working fine so far. So can it be a preference or a document in the old one that's causing the problem?

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Answer 3

smrat Author

Level 1

14 points

Aug 8, 2018 4:53 AM in response to babowa

Here is my Etrecheck report:

EtreCheck version: 4.3.6 (4D041)

Report generated: 2018-08-08 06:33:25

Download EtreCheck from https://etrecheck.com

Runtime: 4:33

Performance: Good

Problem: Other problem

Description:

causing internet slowdown on all devices

Major Issues: None

Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Clean up - There are orphan ﬁles that could be removed.

32-bit Apps - This machine has 32-bits apps that may have problems in the future.

Hardware Information:

iMac (Retina 5K, 27-inch, Late 2015)

iMac Model: iMac17,1

1 3.2 GHz Intel Core i5 (i5-6500) CPU: 4-core

8 GB RAM - Upgradeable

BANK 0/DIMM0 - 4 GB DDR3 1867 ok

BANK 0/DIMM1 - Empty

BANK 1/DIMM0 - 4 GB DDR3 1867 ok

BANK 1/DIMM1 - Empty

Video Information:

AMD Radeon R9 M380 - VRAM: 2048 MB

iMac

Drives:

disk0 - APPLE HDD ST1000DM003 1.00 TB (Mechanical)

Internal SATA 3 Gigabit Serial ATA

disk0s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk0s2 [Core Storage Container] 999.35 GB

disk1 - Macintosh HD (Journaled HFS+) 998.98 GB

disk0s3 - Recovery HD (HFS+) [Recovery] 650 MB

disk2 - Seagate Backup+ Desk Mac 2.00 TB

External USB 480 Mbit/s

disk2s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk2s2 - S***********************e (Journaled HFS+) 2.00 TB

Mounted Volumes:

disk1 - Macintosh HD 998.98 GB (916.04 GB free)

Journaled HFS+

Mount point: /

disk2s2 - S***********************e 2.00 TB (1.47 TB free)

Journaled HFS+

Mount point: /Volumes/S*************************1

Network:

Interface en0: Ethernet

One IPv4 address

6 IPv6 addresses

Interface en6: iPhone

Interface en5: iPad

Interface en1: Wi-Fi

802.11 a/b/g/n/ac

One IPv4 address

6 IPv6 addresses

Interface en4: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge

iCloud Quota: 45.23 GB available

System Software:

macOS High Sierra 10.13.6 (17G65)

Time since boot: About 4 days

System Load: 1.81 (1 min ago) 1.82 (5 min ago) 1.87 (15 min ago)

Security:

System

Gatekeeper

System Integrity Protection

Status

Mac App Store and identiﬁed developers

Enabled

32-bit Applications:

18 32-bit apps

Kernel Extensions:

/Library/Extensions

[Loaded] LogitechHIDDevices.kext (Logitech Inc., 3.9.5 - SDK 10.8)

[Loaded] LogitechUnifying.kext (Logitech Inc., 1.3.5 - SDK 10.8)

System Launch Agents:

[Not Loaded]

[Loaded]

[Running]

[Other]

7 Apple tasks

167 Apple tasks

119 Apple tasks

One Apple task

System Launch Daemons:

[Not Loaded]

[Loaded]

[Running]

37 Apple tasks

173 Apple tasks

126 Apple tasks

Launch Agents:

[Running] com.Logitech.Control Center.Daemon.plist (? 209c949 - installed 2016-10-04)

Launch Daemons:

[Loaded]

[Running]

[Loaded]

com.malwarebytes.HelperTool.plist (Malwarebytes Corporation - installed

2016-10-04)

com.adobe.fpsaud.plist (Adobe Systems, Inc. - installed 2018-02-23)

com.ﬁtbit.galileod.plist (Fitbit, Inc. - installed 2018-03-30)

jp.co.canon.MasterInstaller.plist (? 81ce49d7 - installed 2014-03-19)

User Launch Agents:

[Loaded]

[Other]

[Loaded]

com.google.keystone.agent.plist (Google, Inc. - installed 2018-07-17)

com.adobe.ARM.***.plist (? 0 - installed 2016-05-01)

com.adobe.ARM.***.plist (Adobe Systems, Inc. - installed

2017-11-01)

User Login Items:

Fitbit Connect Menubar Helper Application (Fitbit, Inc. - installed 2018-08-04)

(/Applications/Fitbit Connect.app/Contents/MacOS/Fitbit Connect Menubar Helper.app)

iTunesHelper Application (Apple - installed 2018-07-10)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

RSSBotLoginHelper SMLoginItem (Mac App Store - installed 2018-04-03)

(/Applications/RSS Bot.app/Contents/Library/LoginItems/RSSBotLoginHelper.app)

CIJSUAgent SMLoginItem (Canon Inc. - installed 2016-05-03)

(/Applications/Canon Utilities/IJ Scan Utility/Canon IJ Scan Utility2.app/Contents/Library/LoginItems/

CIJSUAgent.app)

HP Device Monitor SMLoginItem (Hewlett Packard - installed 2017-03-20)

(/Library/Printers/hp/Frameworks/HPDeviceMonitoring.framework/Versions/1.0/Helpe rs/HP Device Monitor

Manager.app/Contents/Library/LoginItems/HP Device Monitor.app)

Internet Plug-ins:

FlashPlayer-10.6: (installed 2018-03-23)

QuickTime Plugin: (installed 2018-07-12)

AdobePDFViewerNPAPI: (installed 2016-03-11)

AdobePDFViewer: (installed 2016-03-11)

Flash Player: (installed 2018-03-23)

EPPEX Plugin: (installed 2013-09-12)

JavaAppletPlugin: (installed 2012-04-04)

3rd Party Preference Panes:

Flash Player (installed 2018-02-23)

Flip4Mac WMV (installed 2012-05-15)

Logitech Control Center (installed 2017-11-08)

Time Machine:

Skip System Files: No

Mobile backups:

Auto backup: Yes

Volumes being backed up:

Macintosh HD: Disk size: 998.98 GB - Disk used: 82.95 GB

Destinations:

S***********************e [Local] (Last used)

Total size: 2.00 TB

Total number of backups: 145

Oldest backup: 2016-04-29 14:08:57

Last backup: 2018-08-08 06:09:46

Top Processes by CPU:

Process (count)

mds

mdworker (16)

WindowServer

kernel_task

Mail

Source

Apple

% of CPU

16

7

4

2

Location

Top Processes by Memory:

Process (count)

kernel_task

mdworker (24)

Mail

FileMaker Pro

mds_stores

Source

Apple

FileMaker,

Inc.

Apple

RAM usage

986 MB

470 MB

300 MB

Location

171 MB

144 MB

Process (count)

kernel_task

mdworker (24)

Mail

FileMaker Pro

mds_stores

Source

Apple

FileMaker,

Inc.

Apple

RAM usage

986 MB

470 MB

300 MB

Location

171 MB

144 MB

Top Processes by Network Use:

Process

mDNSResponde

r

Mail

netbiosd

apsd

CIJSUAgent.app

Source

Apple

Canon

Inc.

InputOutputLocation

122 MB10 MB

2 MB

515 KB

245 KB

76 KB

124 KB

236 KB

6 KB11 KB

Top Processes by Energy Use:

Process (count)

WindowServer

HP Device Monitor.app

RSS Bot

Fitbit Connect Menubar Helper

launchd

Source

Apple

Hewlett Packard

Mac App Store

Fitbit, Inc.

Apple

Energy (0-100)

2

1

0

Location

Virtual Memory Information:

Available RAM

Free RAM

Used RAM

Cached ﬁles

Swap Used

3.70

GB

18 MB

4.30

GB

3.69

GB

99 MB

Software Installs (past 30 days):

Name

iTunes

Pixelmator

Canon IJ Printer Driver

Fitbit Connect

Gatekeeper Conﬁguration Data

Versio

n

12.8

3.7.3

16.20.0

0.0.1

150

Install

Date

2018-07-10

2018-07-15

2018-08-02

2018-08-04

2018-08-06

Name

iTunes

Pixelmator

Canon IJ Printer Driver

Fitbit Connect

Gatekeeper Conﬁguration Data

Versio

n

12.8

3.7.3

16.20.0

0.0.1

150

Install

Date

2018-07-10

2018-07-15

2018-08-02

2018-08-04

2018-08-06

Clean up:

~/Library/LaunchAgents/com.adobe.ARM.***.plist

/Volumes/A**********s/A**************p/C******s/M***S/U*****r/A***************** ************p/C******s/M***S/

A*************************r

Executable not found

End of report

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Answer 4

babowa

Level 9

78,109 points

Aug 7, 2018 6:10 AM in response to smrat

Why don't you download and run Etrecheck and post the entire report here so we can see if there are any known problem causes.

http://etrecheck.com

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iMac is slowing down network for all devices

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