Most of stories were decent, but the wraparound/frame narrative was a bad choice. Only the first two V/H/S movies got it right. They messed up the third one by making it too convoluted and decided to abandon any attempt for the frame narrative to tie the others together after that, which was a bad choice imo. Since all these clips were about aliens (basically) couldn't the frame narrative have been the documentary guys commenting on all of them, not just one? As I said, the individual stories were okay, but the movie kept cutting away to present interludes of the mockumentary, as if copying the original movie without understanding it.
Some of the stories had cliches, some bad acting. You're essentially watching 6 short B-movies, which has always been what this franchise was, but what made it stand out was the immersion it created by making you really feel (even if only for a second) that you somehow stumbled upon this tape, and the content you're seeing is real. At no point do I feel this with this movie. The last clip for example, shows a women on an alien spaceship travelling to another galaxy at lightspeed. How did the footage end up in our hands, then? I'm not saying I would have believed it, but the aim of found footage is to make the audience feel it could be real. Immersion is what gives found footage the edge, where as I think it distinctly worked against the stories here, because it wasn't used right.
I can't say I'm a huge fan of this one, even though I'm a big fan of the franchise. My main gripes are lack of variety, and messy structure.