Runtime Broker high CPU usage

Q. This has become quite a long thread so I’ll try to summarize it:


A process called Runtime Broker has a high CPU usage in Windows 10 (final release version).


Unknown, there seem to be multiple causes and multiple solutions. May be related to OneDrive, permissions for metro apps, Background Task Infrastructure Service, Windows spotlight thingy, windows tips and a number of other apps.

original post:

I have just upgraded my pc to Windows 10. After install, I reset it to get a fresh clean installation. That made a huge difference in responsiveness of the start menu, which before used to take 20-30 seconds to open. However, now a process called Runtime Broker is taking up 20-40% of my CPU.

I googled that this app is about permissions for metro apps or whatever they’re called. I’ve found several threads about either high memory usage or antivirus, but I don’t have any antivirus installed except windows defender and Runtime Broker only uses a few MB of memory. But it does hog my CPU. I did try manually ending it with the End Task button, but then it restarts within seconds and keeps hogging my CPU.

For now i applied a registry hack. Changed [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TimeBroker] “Start”=dword:00000003 to dword:00000004. While that stops the process from hogging my cpu, i have no idea what i’ve done and what the consequences are.


For a possible solution check this post

First it is local to your environment.  Runtime broker is using 6Mb here

In order to diagnose your problem they need to run Windows performance toolkit the instructions for which can be found in this wiki

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