That's because Rubicon is.
I realize that probably 95% of you have no idea what Rubicon is, and that's a shame. On AMC (and with the history of Breaking Bad and Mad Men, that fact alone should get you to at least check it out), the show follows the personnel of a government-funded think tank, and what motivates them. It has good guys and bad guys and twists and turns, and possibly 2 of the greatest television characters of the last 10 years. And yes, I'm including Omar from The Wire on that list.
Yes, it's slowly paced. That's the point of it. The unraveling of the larger story is taking time, which ultimately rewards the viewer immensely. It's different than other shows on television. It should be rewarded for that.
If you've never heard of this show, and feel you might be intrigued, read this interview with the showrunner. It will give you a broad idea of the show without spoiling too much.