I think it's cause of the effort and how the map is really big. I'm guessing lower down your graphics by going to options and video and click advanced and lower everything to low. And your frame rates should go up! :)

Hi Geocube, to be honest i'm not doing that good in map optimization. The map itself is an open space that concludes in a lot of objects rendering in the same time, explaining the fps drop. I am aware that the map is hardly playable on low end computers and i'm sorry for that. I wanted it to be a nice showcase to discover for players and posers. Have a nice day.