Could be a video driver issue? What are your computer specs?
Operating System: Windows 10 Pro 64-bit
Processor: Intel(R) Celeron(R) CPU N2808 @ 1.58GHz (2 CPUs), ~1.6GHz
Memory: 4096MB RAM
DirectX Version: DirectX 12
What video card? the cpu may be a bit low but usually its video card/driver related.
Intel(R) HD Graphics
That may be the issue. It’s possible your card may not support it if it’s an integrated graphics card. Possibly try updating drivers. I’m not certain of another option for the demo. For the full version I may be able to do something to address this kind of problem.