Refresh timer 5 star champs in dungeons
I've been playing since 2016 and I have 16 5 star champions. My concern is in the difficult room I'm able to do very well with my r4 5*, but not with lower tier champions. Shouldn't the refresh time be at least 12 hours and not a day and a half? The class specific rooms are 24 hours, shouldn't we be able to play 2x a day, without spending 70 units to refresh our 5 stars?