High CPU usage when typing a message in Outlook

It sounds that the GPU bug will take the same way as the CPU bug: For a very long time over months or even years (as the other CPU bug before from 2021/07 - 2023/03 which produced permanent CPU load while e-mail attachments were opened), nobody will believe it and everybody says "if it really would be like this, millions of users would have complained". As you can see in the current CPU bug case, over months millions did not complain - also because Microsoft's way to work on bug reports quickly discourages everybody because they never give up their thinking that the mistake is always caused by the user and not by MS, so they let the few users who complain do this and that and this again, until everybody gives it up. Except Gabriel in this case, who after months has been a really glorious exception, thank you so much again!

After all this, I guess the only way out of this repeated coping with really severe bugs in Outlook which are fixed after many months, years or even never, will be Thunderbird or similar competing e-mail clients.

Hi all,

The fix for the CPU spike when typing is now at Current Channel and Monthly Enterprise Channel with the May Patch Tuesday update. The build is not pushed yet so to install it click File, Office Account, Update Options, Update Now.

I updated the Known Issue article with the updated fixed builds from the backports, CPU spikes when typing in classic Outlook for Windows - Microsoft Support.

Hi Gabriel, I updated to 2503 build 18623.20266 on Thursday last week and it's been better but still had CPU spike on 3 occasions.

This past week we had an issue where the Text Predictions feature went missing, Text predictions unexpectedly become unavailable and are missing in Outlook options - Microsoft Support. I'm not sure if that could have exacerbated the issue but that feature is now back available. If you are not using Text Predictions, I would turn it off and that may help minimize the CPU usage.

To turn off Text Predictions:

1. Click File > Options > Mail.
2. Under Compose messages, uncheck Show text predictions while typing.

Hi Gabriel I've had that option turned off for a while so that's not the issue. More CPU spiking again today. This really needs to be fixed properly and quicker.