It's exactly as you say (about the dramatic part). At the start of the episode when Oreki was talking to Satoshi, they animated it so intensely that even the voices didn't match the over-dramatic tone, it was an overkill right there. Also they indeed seem to care way too much about these trivial things and tend to overdo it on the drama.
The resolve was not bad, I liked the conclusion of this "arc" way better then the "Hyouka arc", there is still the question of who is that senpai who was chatting with Irisu, you could kinda guess at this point, but it's too early to think about it and maybe it's not all that relevant.
Overall it was an enjoyable episode for me, it had 1 or 2 laughs in it as well - Oreki's monotone " watashi kininarimasu " was kinda funny.