UE4 is generally pretty demanding on the GPU. I tried playing the game on my mediocre laptop, and was not able to get good performance at any graphical settings either. Most likely your GPU or CPU is below the specifications. I'm interested in getting this game as optimized as possible and I would love for you to play it further down the line, and I promise I will try to make it more accessible for lower-end systems in the future. Thanks for the interest.