I haven't, but I have seen 1 and 2. 1 was "okay", pretty mediocre. 2 was "bad", pretty trash. And 3? Well, from looking at the trailers... This is Illumination Entertainment, they literally have a cut all expenses business approach. What better can you really expect?
I could've gone my whole life without watching a single despicable me or minions movie. It's all just a cheap low budget crappy storyline with the minions as their way to make money off you because of their whole adorable and comedic nature