First, I am pretty forgiving of movies. I watch to enjoy myself. I can deal with mediocre movies and still enjoy myself.
Second, I don't mind the re-telling or re-imagination of a tale. For example Excalibur 1981 is amazing. I also enjoyed the 2004 version of King Arthur with Clive Owen. 2 very different approaches to King Arthur.
Now, about this movie. As I said in the title, wow, and not in a good way. The acting isn't just bad, it's laughable. The story is an interesting idea that gets lost in the horrible script and horrible CGI. And making Merlin look like a cut-rate Gandalf was a bad idea. The Lady of the Lake lives in a scum filled pond.
One good thing is the movie is 99 minutes; about 30 minutes less than a real movie. One other good part was the opening scene of the Battle of Camlann. After that, it is all down hill.
Thanks Redbox for the bait and switch. You see, I only saw this movie because I thought I was renting a different movie. Who knew there were 2 movies in 2017 named King Arthur. I guess I should have paid closer attention to the subtitles. There is no reason Redbox should have this horrible of a movie to rent. The only reason I can think is they wanted my $1.50 now and then pay again when King Arthur Legend of the Sword is released.
So, watch this movie if it is cheap or free but be prepared. Set your expectations very low and you might do alright.