kicdjo

public static Vector3 GetNextPositionOnStreet( Vector3 position ) Will return a position that is on the street, instead use:
SpawnPoint1 = new Vector3(-1029.94336f, -1604.27209f, 4.95688f);  

Is this just lspdfr or do you have other plugins/mods installed? Some are heavy usage so try removing some of those.
 
if this is just a clean install of rage/lspdfr you'll need a better system if you want more performance.