How can I boost EXP, Taming Speed, and Harvest Amounts of my server?
To change the gathering, taming and XP multipliers you're going to need to add the following inside the GameUserSettings.ini under Configuration Files in the server control panel:
Paste the above lines within the [ServerSettings] section.
The values above are higher than the default ark settings, which will give you x2 harvesting/XP and x3 taming multipliers. You can further adjust them to your liking.