Java is a necessity for playing other games. So if your laptop can't handle Java, I don't think it can handle Feral Heart. I do think you need to at least see what graphic card you do have, and if so try to remove some old softwares that you perhaps dont need.
The other thing I suggest is switching rendering systems, but you said doing that makes it crash.
So how about lowering the viewing distance, and turn off the water reflection. It might reduce the lag and let you in.
But from the looks of the screenshot you took, I would think it would be a graphic card error
Feral Heart doesn't use Java, so I don't need it for that. I'm pretty sure Java games on the PC are dying out anyway.
I said before that I can run the game at maximum graphics settings with no lag. I already tried turning them down, though, but it didn't fix the terrain spaz.
As for software I don't need, my laptop is practically empty--all it has is web browsers (Internet Explorer, FireFox, and Chrome), stuff I need for homework (Microsoft Office, Adobe, etc.), a few Chrome extensions to speed up browsing, and flash.
I know what graphics card I have, and apparently it's the same one I have on my gaming PC (except it hasn't been updated in years because updating it requires Java).
Since I don't have this terrain problem on IT games (when they somehow don't cause the laptop to bluescreen), I'm beginning to think FH wasn't coded quite as well...