GPU Slot 0 hashrate is slower than others

[sharkyone]

Well,

I'e just build my Rig with 6 x Geforce GTX1070 Strix OC and Astrock B250 Gaming K4 Fatal1ty MoBo.

During Mining on ethermine.org and etc.ethermine.org I got a very bad Hashrate of mostly only 16 Mhz, sometimes it climbs to 27 Mhz. Other slots makes about 27 Mhz hashrate mostly without big drops.

All Cards was reseted in Afterburner. - Switched some Raisers and Cards to slot 0 and all with the same result, connected to slot 0. - It seems to be the slot.

MoBo was flushed to the actual BIOS before.

So I have no Idea, how I can raise my slot 0 hashrate.

Can you please help me?

[sharkyone]

@gossapril:
Thank you so much, that was the reason.

Best to do is, not to look at the desktop and use remote connections as less as possible.