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Last Epoch > Guides > Amos's Guides
118 ratings
Fix for performance and FPS drops/stutters
By Amos
A short fix for frequent drops and stutters
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Created by
Amos
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Category: Modding or Configuration
Languages: English
Posted
Updated
13 Mar, 2023 @ 4:51pm
19 Aug, 2024 @ 3:40am
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104 Current Favorites
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Very lonely guide section 
Comments
Very lonely guide section
I'll keep it short. This simple fix has brought me from 45fps in big fights and 20fps on certain maps all the way to 60 fps in all circumstances.

Once the game is running, go to task manager, switch to "details" tab, right click on "Last Epoch.exe", select "Set Affinity" and uncheck "cpu 0".

Detailed instructions:
1) go to your Task Manager in windows
2) switch to "details" tab
3) right click on "Last Epoch.exe"
4) select "Set Affinity" and uncheck "cpu 0"
5) click "ok"
6)???
7) profit

You can automate this process with tool called "Process Lasso", by running the game and then in Process Lasso, right clocking Last Epoch.exe, sellecting "CPU affinity" and then unselecting CPU 0. You can even deselect CPU 1, might help further, but I have not tested that.

As long as Process Lasso is running, every time you launch Last epoch now, those selected threads will not be used for Last Epoch
30 Comments
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Claod 1 Sep @ 10:05pm 
Hum, or go to regedit.exe :

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options

-Right clic, new key, name it : "Last Epoch.exe" (without the quotes, warning it's case sensitive)
-Right clic on it, new DWORD 32 value, name it "AffinityMask"
-The value check the link explaining the mask part :

https://www.how2shout.com/how-to/how-to-permanently-set-cpu-affinity-for-a-program-in-windows-11-or-10.html

-You can use windows calculator, use the top left menu (3 bars) to set it to programmer mode :
You will see "hex, dec, oct, bin"
-Clic on "bin" enter your mask

Exemples :
a) with 8 core if you want them all except the 0:
Mask : 1111 1110
Dec : 254
Hex i: FE

b) all cores except 0 and 1 :
Mask : 1111 1100
Dec : 252
Hex : FC

-So, according to that, double clic on the new key "AffinityMask" make sure you select DEC or HEX with the radio buttons, and if you want to enter the decimal/hex value pick the type accordingly. Press ok.
Current.Alt 28 Apr @ 1:45am 
Guys, if ur lagging and playing Fullscreen - then play Borderless Window
Brilliantix 19 Apr @ 11:13am 
nice work for me
Shadow Wolf 18 Feb @ 5:13pm 
Its a problem cause by windows, not the game itself, a lot of games theses days have this same problem.
Shadow Wolf 18 Feb @ 5:12pm 
Other fix is using Process Lasso and set it to use only 90~95% of the CPU on the Last Epoch exe.
Grey 22 Jul, 2024 @ 9:53am 
Just what I was looking for! Fixed stutter in Stash and those random stutters you get after a while during big fights.
Valvax 12 Jul, 2024 @ 7:51pm 
wth.... this actually worked for me??? what is this sorcery!!
Dameritas 29 Apr, 2024 @ 6:16pm 
i just turned my grafics settings to lowest - looks like shit but constant good game. works fine for me
LeftPaw 29 Apr, 2024 @ 10:44am 
There must be some command you can put in the launch option to have this work automatically.
Deimos 27 Apr, 2024 @ 1:58am 
brother, a salut you with utmost respect and I thank you for this incredible service