Do you know why the bismuth mining software consumes so many CPU resources?
In a rig of 6 1080ti each gpu mine at 1580 mh / s.
In a rig of 2 1080ti each gpu mine at 1900 mh / s.

Same motherboard, ram, gpus model, same configuration MSI Afterburner. The only thing that changes is that one rig has celeron, and the other one has an i3.

It slows down the PC much that software minador, as if it took a minador hidden of cpu.