So in the last hour or so, I was trying to figure out why I was getting some shuttering and such. I know I have some limitations with a GTX 950 2GB primarily along with a i5 4460 and 8GB, but after running Rise of the Tomb Raider perfectly with a mostly high settings with some medium stuff (like for texture setting), I was amazed that I was getting some issues even on low setting.
I didn't bother with custom setting till recently, so well there I went to see what I can adjust, and I think the issue is the blur, least on my end. I went to turn it off, and now I been running with medium settings otherwise with a couple high settings put in, and seems like the shuttering went away for the most part as I went around doing open world and a couple side missions.
Anyway despite some performance issues and still not too crazy for certain aspects, like the upgrade system (which is not that much of a deal at this point), this game has been pretty fun. Combat is bleh, but movement and platforming feels pretty nicely done like in the original.