Focus on robbing the Jewelry Store and Bank back-to-back. High-efficiency players often use air vehicles for fast travel; these can be customized at the airport hangers.
For a safer boost, ensure you have redeemed all active Mad City Codes , which often provide large amounts of cash and occasionally XP-related items. Mad City XP Auto-Farm
Automatically kills or arrests nearby NPCs and players, racking up bounty and XP rewards instantly. Top Legitimate XP Grinding Methods Focus on robbing the Jewelry Store and Bank back-to-back