Windows 10: How do I set affinity to 4 cores in a shortcut?

I doing some retro-gaming with Fallout 4. It weas crashing to desktop every few minutes. What finally fixed my issue was going into the task manager and restricting the program to 2 cores. I've read that it will use 4 fine. I came across an article regarding setting affinity in a shortcut, but it didn't address setting affinity to multiple cores but not all cores. I'm running a 14900k and Fallout 4 doesn't seem to like seeing 32 cores.

:)

 

Default affinity for applications set to only use first 4 cpu cores.

Having the same issue on my laptop. Everything in win11 has affinity set to 4 cores, which I think in my case is 2 physical and 2 HT cores. I have a 6c/12t cpu so not ideal at all.

There is definitely a difference to how win10 and win11 handle default affinity. I never had these issues on win10

The launch shortcut solution sounds like a dodgy bodge rather than a proper solution. I don't want to have to create a custom shortcut for every game and app I install.

 

Default affinity for applications set to only use first 4 cpu cores.

The title basically says it all. Recently for some reason most processes are launched with a default affinity (set in task manager) to only use the first 4 processor cores/threads. I have an 8 core 16 thread cpu, so this is utilizing only 1/4 of the CPU and I have noticed a significant decrease in performance. I understand I can manually change the affinity, but doing that for every program each time i reboot my PC is not a solution, so please do not suggest it. I want to figure out why this happened, and fix it.

 

How to set 8 core cpu in affinity settings

Here is how to set your affinity settings using 8 core cpu splitting them into two 4 cpu cores

cmd.exe /c start "WoWSLauncher" /affinity F "C:\Games\World_of_Warships\WoWSLauncher.exe"

As you can see I added "F" next to /affinity that will let you use just 4 cores 0,1,2,3

I can do it easy in task manager but got to keep doing it everytime i want to play the game.

So if you want to use 0 1 2 3 cores just for the game you would add "F" in your line like so..

for cores 4,5,6,7 Do this....

Add F0 next to /affinity like so

cmd.exe /c start "obs32" /affinity F0 "C:\Program Files (x86)\obs-studio\bin\32bit\obs32.exe"

cmd.exe /c start "obs64" /affinity F0 "C:\Program Files (x86)\obs-studio\bin\64bit\obs64.exe"

Depends on if using 32 or 64bit of the os.

If doing it for obs it will not work as it can't find locale\eng-US.ini and failed to load locale but file is there.

So thats how you would set your affinity settings splitting 8 cores into two 4 cores

Am using windows 10.

You want to use 0,1,2,3 for the game and 4,5,6,7 for obs.

Only thing is that it does not save the settings of affinity after you exit the game it will return back to 8 cores when you start the game again.

So if anyone knows how to Save the settings then please post here as i have hunted on the net for awhile now.