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MacBook runs slow at home, fast at another location

Customer complains that his MacBook runs slowly at home, but runs normally at my house. I showed him that it runs normally so we went to his house and the system takes forever to boot, and the kaleidoscope spins for minutes when opening anything.

HDD has 400G free space, 4G ram. I turned off WiFi to see if that made a difference.


What could cause the system to run slow at one location but not another?

Mac Pro

Posted on Oct 23, 2021 5:36 PM

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Posted on Oct 23, 2021 5:48 PM

All other devices work at normal speeds on the home network, including my iPhone. I turned WiFi and Bluetooth off because those seem to be the only difference between his home and mine.

I’ll try creating another user and see how that user runs

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6 replies

Oct 23, 2021 5:43 PM in response to JibsMan

It sounds like the issue may be isolated the the end users home network possibly. How does other products work on his network? Another suggestion maybe to have the user build a ‘Test’ User account on the mac with standard or administrative permissions and see if the issue replicates on that user account.



Solve internet connection problems on Mac

https://support.apple.com/guide/mac-help/solve-internet-connection-problems-on-mac-mh11395/mac


If your Mac doesn't connect to the Internet over Wi-Fi - https://support.apple.com/en-us/HT202663



Oct 23, 2021 5:54 PM in response to Grant Bennet-Alder

It’s an older Mac Pro. The Problem is that the system works just fine and at normal speed when the customer brought the system to my house. I showed him that it booted normally and the icons loaded quickly..

We then returned to the customers house and booted the system up and it loads about halfway and then slows way down. The only difference was my house versus their house.

I turned off Wi-Fi on the computer after it finally booted and rebooted and still no difference. I am taking another person suggestion to create a test user to see if that works normally, but that should make no difference since his login worked fine at my house. A real head scratcher

Oct 23, 2021 5:58 PM in response to JibsMan

Safe Mode does a number of different things. Hold shift at startup, but have your userid and password at the ready.


A parade of unusual things happens.


• Your Mac loads just enough of the kernel to do a disk check. Then it proceeds to do a disk check. This can take an extra about five minutes.

• your userid and password are required, even if you normally auto-login. So have them handy.

• Your Mac adds ONLY a minimal set of Apple-Only extensions, Not including graphics acceleration extensions. Screen updates will therefore be wonky and slow, and the screen may re-draw multiple times, but it ultimately should be accurate.

• Your Mac assumes defaults for as many settings as possible. This is the key for re-setting the screen, but there is a little more to it: Resolution is likely to be lower and settings ordinary. Use this as a starting point to customize settings to your liking.

Any changes you make in Safe Mode will "stick" in regular mode after you restart.

• after restart in normal mode, your Mac sill take slightly longer to start up [once] because it rebuilds some system caches.


"Works in Safe mode, fails in regular mode" implies "It's something you added".

MacBook runs slow at home, fast at another location

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