Wow, man, this is crazy! Very interesting test.
On my pc it runs smoothly until too many objects are loaded.
Whenever I drag one of them around cpu goes up about 10% and gpu goes to ~8. When 15+ objects are present cpu jumps up to 40 and gpu goes to 25. Fps is stable, but I think too much objects will surely drop it. Lookng forward for more stuff in this drection!
I have corei7
and geforce gtx 1060 6gb