How do I ensure that my terrain isn't too demanding?

Unity Engine
1

(My Unity project is a web application, if that makes a difference.)

I’m using Unity specifically to make explorable environments, and nothing more. Since my knowledge of Unity is limited to level editing, I don’t know anything about optimization. How can I ensure that my game (specifically, my terrain) is optimized properly? All I have so far is the terrain, and I’ve already noticed that there’s a little bit of framerate stutter when I move around. Does Unity automatically scale graphics according to the machine, or do I have to do something manually? Is there, say, a way to reduce the amount of polygons in the terrain? It seems to me that the hills look smoother than they need to be. And there are a lot of bumps that aren’t necessary.

Here’s my project so far.

Remember, you’re talking to someone who has no experience with this kind of thing.

2

You have to handle it yourself. For one, increase the pixel error on the terrain. Also, play with the other settings (detail distance etc.). Use as low resolution for everything (heightmap etc.) as you can get away with, and try not to go over four textures.

–Eric

3

Could you give me a brief explanation of how to do those things? Also, what’s pixel error?

4

–Eric