With the following code the only thing it does is creates a cube at the position of spawnpoint1 ive tried a cylander and a sphere also and all do the same thing.
In works but it LAGS like MAD! Can barely move also for the cube i have a texture and one face appears white…
Ok, first of all did you even read the error messages you got there? Because by searching for them i've found this question which explains that this error is generated by PhysX when you have too much objects in the same space / intersecting each other.
Beside the fact that we can't see much in your video since it's not clear when you press your "Fire1" button, it seems that you try to make another minecraft rip-off. You simply have too much cubes there. For that kind of game you have to use chunking the area. Some people think minecraft is a very stupid / simple game but it contains 10 times more advanced technology than a "normal" first person shooter.
You should take a look at the minecraft starter package because with this approach you won't go anywhere.