question regarding unity performance..

We’re currently developing a car adventure game… We’re just wondering why the world inside the game engine is running slow even we’re using a enough computer specs. any opinions?

here is my computer specs.
pentium dual-core 2.5 ghz
ati radeon 4350 1gb ddr2
4gb ram ddr2

It really all depends on WHAT you are doing.

Your machine is fine for unity, but is it fine for what you are trying to make it render?

Likely, it’s due to poor scripting principles. Try doing some debugging and profiling by testing to see how long things are taking, and what is taking up the most CPU time.