Greetings from Lithuania.
Episode 3 was a bit disappointing, to say the least considering the overall show. Only 7/10 - and that's the lowest rate for any episode among 1,2 seasons this far. Many plot lines, sadly anything didn't come to somewhere. I know, the story is still in a build up process, but still, a bit confusing and to messy.
Episode 4 is the best episode without a doubt so far in season 2. There is a great action scene, not as brilliant as it was in season 1 episode 4 with that one take mesmerizing shoot, but still a very tens and realistic one. But not only for this scene i'm giving 10/10 for episode 4. It kinda restored my faith in this season overall. With half of the season done, many plot lines and unfocused script (stylish or call it whatever) starts to making payoffs. Acting was very solid, and some other main characters get chance to shine, and not in the best colors. Script was more tight then ever, and easier to follow, but still not the most usual one, which is the good thing.
Overall, 7/10 for episode 3 and 10/10 for episode 4. With 4 episodes left in this season, i'm hooked more and more with this story. Interestingly, the same happened with my in season 1, i was totally hooked up and eventually blow away starting with episode 4, so maybe episode 4 will be a great start to "True Detective" magic.