AMD SMT Possible fix

[Searching for network]

if you are using and AMD processor, and you are experiencing micro stutters, you should try to set the affinity for the steam client to just your physical cores, this will give the game the same affinity. This fixed all of my micro stutters. it would be great if the devs gave an option for that in game.

[Fredde]

I have AMD and alot of micro stutters. How do you set affinity to just physical cores?
Checking task manager I can set affinity but it does not say which cores are physical and not.

[Agent Stache]

Originally posted by RiSsoXx:

I have AMD and alot of micro stutters. How do you set affinity to just physical cores?
Checking task manager I can set affinity but it does not say which cores are physical and not.

The exact process for identifying which cores are physical and which are logical can depend on your specific CPU. Generally, every second core is a logical core. For example, if you have an 8-core, 16-thread CPU, cores 0, 2, 4, 6, 8, 10, 12, and 14 would be physical cores, while cores 1, 3, 5, 7, 9, 11, 13, and 15 would be logical cores

[Agent Stache]

Originally posted by The Logitech m720:

if you are using and AMD processor, and you are experiencing micro stutters, you should try to set the affinity for the steam client to just your physical cores, this will give the game the same affinity. This fixed all of my micro stutters. it would be great if the devs gave an option for that in game.

does this not effect your other games? I tried to set it only for HLL but doesnt let me

[h3x1e_]

Originally posted by gilgamesh!:

does this not effect your other games? I tried to set it only for HLL but doesnt let me

setting steam to use only Physical Cores WILL affect every other steam game too, yeah.

[Fredde]

Originally posted by gilgamesh!:

Originally posted by The Logitech m720:

if you are using and AMD processor, and you are experiencing micro stutters, you should try to set the affinity for the steam client to just your physical cores, this will give the game the same affinity. This fixed all of my micro stutters. it would be great if the devs gave an option for that in game.

does this not effect your other games? I tried to set it only for HLL but doesnt let me

I think HLL anticheat prevents you from doing such things to the game, thus I guess why OP suggest to do it to steam.

[Fredde]

Originally posted by gilgamesh!:

Originally posted by RiSsoXx:

I have AMD and alot of micro stutters. How do you set affinity to just physical cores?
Checking task manager I can set affinity but it does not say which cores are physical and not.

The exact process for identifying which cores are physical and which are logical can depend on your specific CPU. Generally, every second core is a logical core. For example, if you have an 8-core, 16-thread CPU, cores 0, 2, 4, 6, 8, 10, 12, and 14 would be physical cores, while cores 1, 3, 5, 7, 9, 11, 13, and 15 would be logical cores

Thank you, will try this!

[DosEvil]

This helped fix my micro stutters, cheers!

[Fredde]

Did not solve mine, still have alot of random stutters.

[Searching for network]

you must set affinity for STEAM, not your individual apps
!!!!

[El Goretto]

Whatever result you obtain from this (I'm curious and interested ^^), the description is wrong.

There is no such things as "physical cores AND logical cores" when you consider affinities from windows: cores you see are all logical. But doing what you describe prevents the OS scheduler from running 2 tasks on 2 logical cores that are on the same physical core (let"s call them "siblings" if you want). In short, you try to disable SMT from the OS.