Upgrading Metin2 Energy guides
You should have adjusted both the rate at which your energy drains when running and the rate at which it returns. Overall, these changes mean you will be able to spend a greater proportion of time running than before. At this Metin2 level, you could have a base stamina of 165. This is a good amount of Sta to build your Int on, so you'd start adding int. This would probably be enough to last you even to 120 with defense pierced suits and average gear.
Some may want more defenses; some may want less depending on your equipment and your confidence. Here you can get the cheapest Metin2 yang. This is why you only add int when you reach your desired amount of Sta that will be enough to last the rest of your Psykeeper career or near it at least. Please remember not to stop adding Sta either if you choose to start adding Int near your final Stamina cap; so add them both up slowly. At level 75, you receive the strongest Metin2 in the game; Psychic Square. But it has a cool down, and probably the reason why some times people use Maximum Crisis instead.
You have adjusted all energy-restoring potions and food, so that they restore more run energy, to make sure they are still useful in light of the above changes. Members features were always supposed to be turned off on free worlds to avoid spoiling the game for the free players, and indeed most of them were, but for some reason you missed the Agility one. Of course, members are welcome to also play on free worlds if they want to, but they shouldn't expect to have an unfair advantage against free users when playing on a free users' world.