Actually too much IOH will get the board unstable. Try to use 1.2 to 1.3 for 24\7 also use CPU PLL 1.6 if overclocking, lower pll might give better overclocking. Use bout 1.35 24\7 on vtt and 1.60 max when overclocking. But some fans on it.
Upping the PCI-E MHz will help u also but dont clock it for 24\7 useage. PCI-E u could raise up to 130 for the best effect.