I have problems with:
1) last hit on bosses (50% of the time I have to reload)
2) N-Gacha (50% of the time I have to reload)
3) Chance spins (50% of the time I have to reload)

Otherwise the game works fine.

When they interduce a new slayer in N-Gacha the bug costed me 100-200 reloads
When I spend a lot a puddings to kill a super boss it so anoying to have to reload the game and see somebody else got the last hit kill because of a crash..

*** Update Lag has gone after todays update ***