I did not like this series personally because my ship failed but overall, the ship that did sail had a very preconceived plotline to it.
However, there was zero chemistry whatsoever (at least that's what I felt) between the FL and both the MLs involved in the triangle.
The actors were great. All the characters had well thought out storylines for them. Except, the main pairing in this drama failed to capture my interest till the end. The FL is very crass, to be honest, compared to the FL of Reply 1988. The second lead deserved better in my opinion. He was much more involved in satisfying the better interests of the FL. Whereas, the dude she ended up with actually was just there... since the beginning. That's it. (At least that's what I thought). The dude she ended up with never actually took a step to justify his feelings for the FL. Till the end, she had to be the one to approach him first or go to him, instead of him coming to her. Dude kind of even came off as a bit misogynistic in the last few episodes.
The pacing of this drama is actually quite slow compared to the other Reply series. The first few episodes did not really have a lot going on. So it felt a bit boring. The rest of the episodes, even thought they did show the plot developments of the side couples and extra characters, mostly focused on the love triangle involved, therefore making it seem a bit dragged towards the end.
Overall, if you have nothing else to watch, you can go ahead and watch this one! :)