Then you need to change your settings from Open GL to Direct redering system
The way to do this is to Open up your Feral Heart game to the main front page. Then click Options>Video>Direct3D
Suggestions when dealing with lag
> Turn off your water reflection
> Turn down your viewing distance. it really helps for thous computers that have a hard time dealing with a lot of time loading
> Turning off name tags- This helps for me really, when a map is to full and you turn this off, it helps a little with the lag
Good luck floof, I hope this does help.