How the hell can you explain that in sanbox my HD5770 can handle Ultra with 20 FPS, no stuttering GPU usage 99% cpu 90% tops and in actual game ultra - 10-15 fps max, gpu sage 50-80% MAX and 100% cpu usage, and of course stuttering.

And that's all about DX11 where the issues are more visible.
If anyone need - i can [s]post[/s] make a video.

If you are trying to use ANY editor tool with a 32bit, that is BY FAR the dumbest thing you could do.

You don't get it: 32 bit part of game IS NOT, i repeat IS NOT optimized.

But the editor and the core is optimized - so that's why i am getting better FPS in editor than in game, on the same settings.

How can you use the Sandbox with a 32-bit system?

Who said i use 32-bit system?