I watched it for a while. While indeed Rome was a very violent city and they are trying to capture that.. some of the violence is downright unlikely to the point that they did try too hard. Two examples that stick out from episodes I saw.
Two guys cannot pull a chain (that is wrapped around someone's neck) so hard that his head is literally ejected from his body.
There is no way a woman can beat another woman's head against the floor so hard that her head essentially becomes nonexistent.
It had interesting plot lines, but the violence is often very clearly a "faster and more intense, forget about realism" type of violence.. which just pushed me right out of my suspension of disbelief every time. I kinda got bored of reminding myself that it's just a TV show. I don't want to be thinking about the fact that it's TV while I'm watching it, I want to be sucked into the narrative and storytelling. At some point I just stopped watching though.. so I didn't see the finale. Heard it had a huge body count though.