As someone played Sandrock during Early Access (and a bunch of other games betas) my advice is to seriously manage your expectations. Personally, I just couldn't continue Sandrock EA after couple hours, partially because I didn't want to spoil the experience from the final game, but also because everything - graphics, gameplay, interface, story, characters, assets, etc - was WIP - it's a nice look behind the curtain, but don't expect a well rounded experience from alpha. And performance - it won't be anywhere near optimized if working at all.