After countless attempts, I finally managed to survive the end of Chapter 3 without any hard crash to desktop and I was able to smoothly complete the game (well, I did have to grind a bit in one of the last dungeons
I want to thank again Helly for his outstanding work, playing Arcturus was something I wished to do since a long time ago and his translation finally made it possible. The game has its flaws, especially in the last two chapters where the story feels a bit rushed and a lot of characters end up being underused, but it still was an extremely enjoyable and unique experience with a surprising amount of contents, a rich setting, lots of interesting locales to explore and some memorable characters and tonal shifts, not to mention an addicting (if somewhat questionably balanced) combat system.
More people should give a chance to this game, and I think it would make a good fit for a Steam\GOG release if someone was able to contact Gravity and Sonnori (or whoever has the rights to Arcturus nowadays) and arrange a localization agreement.
I can only hope more Korean rpgs are translated in the future, I feel there are still a lot of hidden gems that deserve a second chance in a bigger market, like War of Genesis 3 or Rhapsody of Zephyr.