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Question: Glacial typing post upgrade

Everything seemed to go OK with the upgrade except I am having to wait a few seconds between typing each word before seeing it on the screen. Is anyone else having this lag problem and can it be solved. I have rebooted a couple of times after the upgrade with no success.

MacBook Pro, OS X Yosemite (10.10.3), Core i7 2.5Ghz 17-Inch (Late 2011)

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Refer to If an issue doesn't happen in safe mode in that Apple Support document. Graphics rendering is slow in Safe Mode.


Needless to say, if you are using any non-Apple "anti-virus", "cleaning", "cleansing", "washing", "Internet security" junk, anything at all in those broad categories of useless garbage, don't. A lot of things won't work if you do.

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Nov 15, 2017 2:43 PM in response to MTUser2007 In response to MTUser2007

Possible Fixes for High Sierra

You should try each, one at a time, then test to see if the problem is fixed before going on to the next.


Be sure to backup your files before proceeding if possible.


  1. Shutdown the computer, wait 30 seconds, restart the computer.
  2. Resetting your Mac’s PRAM and NVRAM
  3. Reset the System Management Controller (SMC)
  4. Start the computer in Safe Mode, then restart normally. This is slower than a standard startup.
  5. Repair the disk by booting from the Recovery HD. Immediately after the chime hold down the Command and R keys until the Utility Menu appears. Choose Disk Utility and click on the Continue button. Select the indented (usually, Macintosh HD) volume entry from the side list. Click on the First Aid button in the toolbar. Wait for the Done button to appear. Quit Disk Utility and return to the Utility Menu. Restart the computer from the Apple Menu.
  6. Create a New User Account Open Users & Groups preferences. Click on the lock icon and enter your Admin password when prompted. On the left under Current User click on the Add [+] button below Login Options. Setup a new Admin user account. Upon completion log out of your current account then log into the new account. If your problems cease, then consider switching to the new account and transferring your files to it - Transferring files from one User Account to another.
  7. Download and Install 10.13.1 High Sierra Update
  8. Reinstall OS X by booting from the Recovery HD using the Command and R keys. When the Utility Menu appears select Reinstall OS X then click on the Continue button.
  9. Erase and Install OS X Restart the computer. Immediately after the chime hold down the CommandandRkeys until the Apple logo appears. When the Utility Menu appears:
  1. Select Disk Utility from the Utility Menu and click on Continue button.
  2. When Disk Utility loads select the drive (out-dented entry) from the Device list.
  3. Click on the Erase icon in Disk Utility's toolbar. A panel will drop down.
  4. Set the Format type to Mac OS Extended (Journaled.)
  5. Click on the Apply button, then wait for the Done button to activate and click on it.
  6. Quit Disk Utility and return to the Utility Menu.
  7. Select Install OS X and click on the Continue button.

Nov 15, 2017 2:43 PM

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Nov 16, 2017 5:55 AM in response to John Galt In response to John Galt

I tried this as you suggested. My Mac was very slow in safe mode - I could watch the screen be drawn. I then rebooted in normal mode and I would say it is slightly better, but not much. As I type, I am waiting about 3 to 5 seconds to see a word appear on the screen.

Nov 16, 2017 5:55 AM

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Nov 16, 2017 8:29 AM in response to MTUser2007 In response to MTUser2007

Refer to If an issue doesn't happen in safe mode in that Apple Support document. Graphics rendering is slow in Safe Mode.


Needless to say, if you are using any non-Apple "anti-virus", "cleaning", "cleansing", "washing", "Internet security" junk, anything at all in those broad categories of useless garbage, don't. A lot of things won't work if you do.

Nov 16, 2017 8:29 AM

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Nov 16, 2017 6:44 PM in response to John Galt In response to John Galt

Using your suggestion, I decided to review any application that dealt with input from the keyboard. I had an older version of Grammarian installed. There is an upgrade for High Sierra, but I wasn't running that. Once I uninstalled it, the text that I type appeared immediately on the screen. Issue resolved. Thanks.

Nov 16, 2017 6:44 PM

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Question: Glacial typing post upgrade