Decent watch, could watch again, and can recommend.
Taran Killam, because of his time on SNL, tends to find his ways into roles he doesn't quite match. He's funny, he's a good actor, but he's not always quite enough of whatever he needs to be, in this case: likeable.
And on the opposite end, he's not enough of a control freak, he's kind of a bland middle ground. And he's supposed to be good enough, in some way, for Gillian Jacobs. The start of this movie literally looks more like a setup for the weekend where she dumps him than when he would propose. Though I guess they're not exclusive.
The Killam solution seems to be add someone who is a more infamous actor for being obnoxious, Bobby Moynihan. While Moynihan is good at what he does, I'm usually not a big fan of it: he's usually a lesser version of Chris Farley leaning on being more stupid than fat and physical.
I would imagine that Bobby's character would make almost anyone insane, but this is a long string of abuse humor rivalling "Duplex", and I would argue at a lesser quality.