Toribash
Original Post
Minecraft, y u no easy?
I have a world converted to .OBJ with an MTL file and everything but... my programs limit my rendering D:.

Blender, while it allows me to more easily add the textures, runs very slowly and renders like an old lady walking across a street made of soulsand...

C4D renders fast and comes with some AMAZING presets for water, but I can;t get the textures onto the world correctly... it always ends up as either a solid color or as static...

Check settings and wipe things off, for example in blender turn off mipmaps and envmapping, SS, raytrace, etc

If you have the time the manually remove hidden blocks (although I assume the converter did this already as necessary etc). You can manually modify the mesh to remove all hidden faces etc to increase efficiency.