Some processes in Windows can hog your CPU, whereas you want them to run in the background. I.e. C++ linker (cl.exe) or MS Teams (which is known to be particularly bad on all the resources).
I used to use specialised software like Process Tamer (which is awesome) to downgrade CPU priority for those until I found a hidden registry key in Windows to limit that. The corresponding
.reg file to say limit
Teams.exe process is:
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Teams.exe] [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Teams.exe\PerfOptions] "CpuPriorityClass"=dword:00000001 "IoPriority"=dword:00000000
I can’t find any documentation on this feature, other than it being mentioned in Windows Internals book but it works.
CPU Priority is a value 1-6:
There are two other options -
WorkingSetLimitInKB which I don’t know what they do yet.