
FSR doesn't change anything for this old game for example, unless your GPU is from ancient era. Game barely uses any GPU to begin with. Anisotropic filtering you can max out (16) easily with any GPU without affecting perf.
I also wouldn't use DXVK_ASYNC as its unofficial hack. Yes, it may reduce some of the stuttering, but it could also lead to false rendering. cause DXVK ASYNC doesn't wait for shader, but compiles them asynchronosly which can lead to some objects not being rendered for 1 or 2 frames.
DXVK 2.0 has graphics pipeline library. If your drivers support it, it makes the shader compile smooth. nvidia supports it since June vulkan dev drivers. RADV i think has the support in experiemental atm.
but yeah, if you don't want to use lutris then all you need is to install dotnet40 d3dx9_34 with winetricks and drop a DXVK into the prefix also
edit: My response was just because not everything you mention there is needed. Unless theres some bugs with Arch kernels i doubt you will gain much from it. Ofc its always fun to experiment with different kernel schedulers. I myself using the PDS kernels. But for the most part with everything Arch Default you will get very similar performance. Tweaking a lot can ofc yield like up to 5% more perf in some situations etc but overall, not much. CPU singlethread perf is the thing that affects the performance the most in this game