When the server’s online population reaches 3,000 or more, finding metin stones in the game becomes extremely difficult. For a single metin you kill, you might even need to track its respawn time in an Excel sheet 
My suggestion is to increase the stone spawn rate by 3% for every additional 500 active players after 1,500. This would mean a 12% increase when the server hits 3,000 players. For 3k and above, it might make more sense to keep the spawn rate fixed at around 15–20% faster.
I’m not entirely sure how this would affect the overall in-game economy, so it would be useful to discuss it in a more structured and logical way.
1500 online => +%3 more faster
2000 online => +%6 more faster
2500 online => +%9 more faster
3000 online => +%15 more faster
My suggestion is to increase the stone spawn rate by 3% for every additional 500 active players after 1,500. This would mean a 12% increase when the server hits 3,000 players. For 3k and above, it might make more sense to keep the spawn rate fixed at around 15–20% faster.
I’m not entirely sure how this would affect the overall in-game economy, so it would be useful to discuss it in a more structured and logical way.
1500 online => +%3 more faster
2000 online => +%6 more faster
2500 online => +%9 more faster
3000 online => +%15 more faster