What I always do in every KC Cup event :
- During the 1st stage : play 5 games per day just grab the gems reward. Use fun deck only. Only start climbing for DLv Max during the 2nd stage days when all strong tryhard players already reach DLv Max
- After qualified for the 2nd stage : play 5 games per day just to grab the gems reward. Use 🔥 deck or simply pass every turn to quickly finish the game. Top place KC Cup spot is for rich sleepless homeboy, not for people like me who have daily business IRL and need to get good sleep everyday
Sleepless players tend to spend more money on this game. That's why Konami don't change any rules in the 2nd stage KC Cup, although it is easy for them to just limit the number of duels so no one can play more than 500 duels in the 2nd stage