Upon loading, Speeder will retrieve the ID of your character and will use this ID to determine the entity that corresponds to your character until you exit out of Speeder. This will prevent situations where your character is not the first entity in the player array. Normally, it is, but I have a sense that this is not always the case. This should resolve issues related to reading player data, such as HP.
I have improved the logic for determining the address for potions. Some classes were not working correctly. You can always see your current potion count in Speeder's console window, so you will know whether it is working or not.
These changes require updating Speeder to version 151.