I have a Radeon R9 390X which is about a $500.00 card and I still get major FPS issues at times and I can let you all know it’s nothing to do with your video card. I had to send my card back for warranty due to some artifacts I was getting in Dark Souls 3 which was due to hardware problems… anyway so while it’s sent out I’ve been using a Geforce 250 and I get almost the exact same FPS, yes it is slightly lower at times but nothing massive.
Upon further inspection I found that the game isn’t even using most of your GPU processing and instead is almost completely reliant on your CPU. Now I have a fairly high end i5 and since this game doesn’t use multiple cores you are bound to have issues.
To further test this I applied some processing usage to different cores and checked how it effected my performance and what I found is putting a slight load on my CPU while playing and in Klai I would lose a lot of FPS. I moved that process exclusively to a different core and now there was no impact at all.
I’ll test further when I get my card back, but I can tell most of you now, if you are having FPS issues and you have a moderately decent card don’t go out updating it expecting a huge difference, instead if you CPU is a little bit older maybe upgrade that if you really care… even then you will likely not see any major increase due to the fact that the game is just poorly optimized ATM.
Now I’m not saying your GPU will have have no effect on the FPS it certainly will to an extent and especially if you’re using something like a onboard Intel 4000 HD or something, this is why I said if you have a moderately good card you won’t see much of a difference.
There are some tweaks out there you can do to the user.xml file (your config file essentially) that will help out some people with lower end systems and I suggest you look into those. There are a few on Reddit that I used on my laptop which is not a gaming machine and used for work and school. I saw some increase but nothing too dramatic.