I couldn't make it through the first episode. Yes, the CGI is subpar, but I can overlook that. I also don't think that CGI automatically makes an anime bad.
The show is boring. An insanely giant man who's too cool for school kills some gangsters in what should normally be a Keanu Reeves "Woah!" moment for me, and I was bored.
Maybe, I have just seen this type of slow-moving, giant boulder