The Witcher 3 Performance Problems on PC?

I just got the game and am running it on a Lenovo X315. The main menu screen looks BEAUTIFUL and flows very very nicely. But when i get into the actual game, it slows down. The reaction time between my controls and the game are slower, its lagging pretty much. And the voices are very off from the character's mouths when they speak. I know that my computer should be able to run this so i'm not sure whats wrong. I've been messing with the settings all day and can't make it run nicely without it turning the graphics to complete crap.

Computer Specs: AMD A8-7600 3.1 GHz Processor
8 GB SO-DIMM DDR3 RAM
1 TB 7200 rpm Hard Drive, 8 GB Solid State Drive
AMD Radeon R9 360 Graphics

If you have any tips on how to make this run better it would be greatly appreciated thank you.

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