Rx 480 nitrto oc 8 gb 1 card drop h/s with eth mining

I i just transfer from xmr to eth and i start have problem. I use Claymore's Dual Ethereum+Decred_Siacoin_Lbry_Pascal AMD+NVIDIA GPU Miner v8.0 always one card drop h/s this is normal with eth ? all card are be flash with Vdrop = ( low power consu..) 1150/2080 mhz. Windows 10 drivers 16.2

Any solution ? I never have problem with XMR when mining 4350 h/s with 690 Wats wall power/ ETH 170 when start after 15 min 162 h/s and 925 Wats.