(Will upgrade the score if the story line turns out to be good, only a few shows in, but looking at other reviews that isn't seeming likely.) Edit: Story turned out to be not so bad so jump from 1 to 3 star but still lots of truly awful distracting CGI.
Main reason for the score is how awful the effects & CGI is, i tend to completely ignore all of that stuff and often laugh at people thinking they're professional movie critics rather than just enjoy the story, but they're so bad in this that its actually distracting; think 1970 straight to daytime TV movie and then make it 10 times worse, which isn't helped by the story being slow so nothing to take your mind away from how bad it looks.