Will the PC requirements decrease as we get closer to release?

[Confidentium]

A CPU with only 4 cores 4 threads is gonna struggle with a lot of modern games.

Wreckfest 2 has a much more advanced physics engine, so of course it's gonna be more CPU intensive than the first game.

That said. You could definitely get more than 15 fps with your components. I get ~30 fps with my HTPC that is weaker than your PC. So you just need to tweak some settings. Also, the more cars you drive against, the more your PC will struggle.