Hello, Paroxysm, your computer drivers likely aren't the issue. If anything, you can manually change the rendering subsystem by locating C:/Feralheart and opening the file called ogre.cfg in notepad. From there, find the following section:
Render System=Direct3D9 Rendering Subsystem
[Direct3D9 Rendering Subsystem]
To change your rendering subsystem to OpenGL, replace what is above with this:
Render System=OpenGL Rendering Subsystem
[OpenGL Rendering Subsystem]
Besides that, check how much RAM you are allocating to Feralheart and turn off any programs you are running along FH. Shut down any unimportant programs that start with your PC's startup as well. Again, this is likely an FH issue as it is not strongly optimized and your specs are just fine. Let us know how it goes.