The writing got downright silly in the first few episodes of the season — specifically, how Liv fully became various stereotypes (mean old man, obnoxious frat boy, spoiled socialite) when she ate the victims' brains, rather than merely take on some of the victims' knowledge and personality traits like she did in Season 1. And then how she spent most of the rest of each episode playing up the stereotypes rather than actually solving the murders… Ugh.
In particular, in the socialite episode, the attacker conveeeeeniently survived the same fall that killed the socialite, just so that Liv couldn't eat his brain and immediately learn who had hired him. Nope, she had to eat the socialite's brain instead, just so that they could do an episode with her strutting around in skin-tight haute couture. Sure, she's my type and she looked fantastic, but c'mon.
Even worse, the writers obviously knew how silly their writing got — they showed it in Clive's increasingly incredulous reactions to Liv's increasingly erratic behavior — and that sort of self-consciousness made the whole thing seem even sillier.
I know, I know, this is supposed to be the "com" in "rom com zom dram", but c'mon.
Anyhow, it looks like things might get better by mid-season. I certainly hope so.