[Feature request] Multi core affinity option

[vini1264]

I know that the SingleProcAffinity setting already exists, but It comes with a huge performance penalty when used in post 2005 games. Would be great to have a setting that allows to set the CPU affinity to n amount of cores, it would help running games like Dead Space 1 without the performance bottleneck of single core affinity.

[elishacloud]

What's the use case for this? I added SingleProcAffinity because there are some games that crash, hang or otherwise have ill effects if the game is assigned to more than one processor. But if the game works with more than one processor, why not just use them all? Why restrict the game at all in these cases?

[vini1264]

There are games from late 2000s and early 2010s that refuses to work if your CPU goes past a certain amount of cores. Dead Space 1 and 2 for example have crashing issues when the PC goes past 10 CPU cores due to a memory overflow in it's CPU detection code, which doesn't happen on quad core or 8 core CPUs. Dead Space 2 already has a fan patch that fixes this overflow, but would be nice to have a more generic solution for other games that share a similar issue on high end processors without limiting to a single core.

[elishacloud]

I added an option called ProcAffinityMask that allows you to set a mask for the CPUs you want to enable. Below are some examples:

• If you want to use only the first 2 CPUs then set ProcAffinityMask to 3
• If you want to use only the first 4 CPUs then set ProcAffinityMask to 15
• If you want to use only the first 8 CPUs then set ProcAffinityMask to 255

BTW: I should mention that I set the affinity for the game's threads, not the game process.

[M4RCK5]

This could be usefull for Space Marine Aniversary Edition and Dawn of War 2 Aniversary Edition too