Coherence would make a good double feature with The Invitation. Both deal with dinner parties that turn weird and deadly to the good looking Los Angelinos in attendance, though Coherence is more of a mind fuck than The Invitation was, and veers more into science fiction than horror. (Ultimately, I think The Invitation is the better movie)
The cast is largely unknown, save for Nicholas Brendon, if anyone was wondering what he had been up to since the end of Buffy the Vampire Slayer (aside from, uh, getting arrested and stuff). He plays a character that's basically himself, which adds an even extra level of meta-comedy to the whole thing, once the premise of the film reveals itself...let's just say, will the real Nicholas Brendon please stand up?
Also, if you plan on watching this one, I'd wait until after the Election.
Coherence is currently streaming on Amazon Prime.