Memory leak issues, usually caused by instantiated objects allocating memory, that are then not properly destroyed to release said memory, causing programs to gradually slow and potentially crash. There are constant lock ups when entering battles, and gradual lagging when switching from area to area (ie: Champions, Tavern, Tournaments, etc). These lock ups and crashes result in lost resources, when starting battles, and/or rankings in arena. Champion's drop rate RNG still feels suspicious with "unlocked" and low tier champs dropping more frequently. Drop rate modifiers are applied to specific champions during special events (ie: 10x), and with above experiences lead one to believe drop rate modifiers may/can be applied at all times to S/SS tier champs.