"So, why do I get jerky 20-30 fps when I step into those bushes or when I come close to trees?! WTF?!?!?!"
-> Fillrate problem!
http://www.conitec.net/beta/framerate.htmThe bigger a model or sprite is scaled, and the closer it is to the camera, the slower it is rendered. The rendering time depends on the number of pixels that the object covers on the monitor.
But I donīt know what you could do against it, sorry.
