If MGS 2 struggles to run, what other games can I rule out?

[willkuer]

For extra rendering threads you have to play a bit. Depends on the HT ability of your cpu.

Just try 2, 3, 4, 5 threads. The optimum should be somewhere within. I guess it is 3.

[Ryudo]

You only have 4 threads. So there's no point in setting it to 4. It runs on 1 thread by default, so 3 extra threads.

AVX2 is better for Software Mode only I believe, otherwise you won't really get much of a difference from it.

[Blyss Sarania]

AVX2 is best for software. AVX2 and SSE4.1 are tied for best in hardware(according to my tests, there is a thread around somewhere)

[willkuer]

I read somewhere that AVX and AVX2 kick only in in software mode. For hardware mode you have a fallback to sse4.1.... Even if your thread is somehow implying that there is a difference between AVX and SSE4.1 in hardware mode (if I remember correctly)

[Blyss Sarania]

Hmm. I didn't know that. But then why is SSE4.1 faster than regular AVX in my test? AVX2 and SSE4.1 were almost the same, but regular AVX was slower than both.

[willkuer]

I am not sure about these results. But since I don't know how the fall back is implemented if it exists....

I think in one of the revisions where avx was introduced it was said that avx (hardware) == sse4.1(hardware).

[Ryudo]

AVX is slower than SSE4 Hardware, AVX2 is about the same speed as SSE4 HW.

AVX is about the same for SSE4 SW, while AVX2 is a little bit faster than SSE4 SW

There aren't any 'huge' differences though between them.

[willkuer]

Have you made similar experiences as Blyss or are you referring to his (and nobbs) thread?

[Ryudo]

Similar experiences. For hardware mode I use SSE4 because of that.

[Nobbs66]

why don't you just use AVX2 then.