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makes your operating system prioritize services and processes to run your game better but this can cause system failure and instability if you dont have a good running system. If you Overclock this can cause system instability.
-noSplash:
disables startup videos and advertisements.
-cpuCount=#:
enables extra CPU cores and Hyperthreads.
-maxMem=#:
when set to "6144" (6GB) and up lets your game use more system Ram then 4GB.
Do not set to higher than 4GB if you dont have at least 8GB. You can set to "8192" (8GB) if you have 12GB+ Ram.
For Hyperthreaded CPU's such as a Quad Core you will apply this:
-cpuCount=8
This will enable your Hyperthreads on your CPU so your CPU will act as an eight core when running Arma 3.
If you are running a Hyperthreaded Six Core then:
-cpuCount=12
If you are running a Hyperthreaded Eight Core or Eight Core Xeon then apply this:
-cpuCount=16
If you are running just a non Hyperthreaded CPU such as a Quad Core then select "4" instead of "8" same for a Dual Core you will select "2" instead of "4".
All AMD CPU's are NOT Hyperthreaded so Hyperthreaded options is highly not recommended as this can cause system failure or damage.
I will not be responible for system failure and damage if you choose to select more cores then you have on your command line!
http://www.battleguns.net/forum/m/7737561/viewthread/6153624-arma-3-cpu-optimization-fix
1. Go to Steam Library
2. Go to "Arma 3" Right Click then select "Properties"
3. Select "Set Launch Options"
4. Copy and paste the correct launch command line below to what your system is setup for and click "OK".
For AMD CPU users:
AMD Dual Core with 4GB System Ram:
"-noSplash -cpuCount=2 -high"
AMD Quad Core with 4GB Ram:
"-noSplash -cpuCount=4 -high"
AMD Six Core with 4GB Ram:
"-noSplash -cpuCount=6 -high"
AMD Eight Core with 4GB Ram:
"-noSplash -cpuCount=8 -high"
______________________________________________
If your running more than 8GB Ram then apply this to the end of the launch line:
"-maxMem=8192"
This will allow your game to utilize 8GB system Ram instead of 4GB.
______________________________________________
To me it did some improvement to game, it didn´t gave fps but the game got a lot more fluid, less lag.
Maybe could help some people.
Important info, must have at least 6 gb, i recomend 8 GB.
I´m saying that (on system settings) play with low or ultra settings there for overloading cpu or gpu i get always the same fps maybe a diference of 5 fps+/- and lags on the same places airfield ou high density forest and if i do autodetect i get better gfx and more fps, and the autodetection set the game on very high settings.
I answer to white said, i do not believe that arma 3 only uses 1-2 cores because i have a 8 core cpu and i overclocked to 5 ghz and i got the same fps when i only got 3 ghz speed,
The only thing i notice was when i turned off 4 cores (4 active cores) the game got slower, so if i turn off to 6 cores using only 2 cores i do not belive the game will get the same fps when i was using 8 cores.
To me arma 3 was a improvement comparing to arma 2 cause i get fps , weird.
Still theres something wrong with this game, no matter what i do on gfx options, lowest gfx or ultra gfx the difference is not significant ( around 5 fps), i understand the game is not final burt still it´s weird.
Regards to all.