I wonder if you are actually using the nvidia driver or just installed it. You could trivially have installed the nvidia driver but actually be using nouveau. Running glxinfo in a terminal would probably be informative.
The complexity of setting this up would be a good point to address. Linux Mint for example has a tool to do this for you. This is logically a workaround for nvidia actually contributing an open source driver that doesn't suck.
There is a supposedly much better supported open source driver for new AMD hardware as well. Another thing the community is doing.
If the problem is with the closed source driver there isn't much the community can do. It's very hard to reverse engineer a complex device like a gpu. If the problem isn't games in general but that particular game there again isn't much the community can do.
The complexity of setting this up would be a good point to address. Linux Mint for example has a tool to do this for you. This is logically a workaround for nvidia actually contributing an open source driver that doesn't suck.
There is a supposedly much better supported open source driver for new AMD hardware as well. Another thing the community is doing.
If the problem is with the closed source driver there isn't much the community can do. It's very hard to reverse engineer a complex device like a gpu. If the problem isn't games in general but that particular game there again isn't much the community can do.