OK I have to admit that he board is not as bad as I originally thought. Surprisingly the vdroop is not as heavy as it seems. The readings of CPU-Z and Asus Probe 2 are lower than what the actual voltage is.
For example:
1.5250V set in bios
1.440V according to the bios hardware monitor
1.408-1.424V CPU-Z load, CPU-Z reads the wrong voltage when idling
1,46V Asus Probe 2 idle
1.42V Asus Probe 2 load
1.487-1.488V idle measured
1.460-1.470V load measured

Too bad I am not allowed to do the pencil mod right now. I bet it would help a lot. But then again the question is why Asus doesnt replace that single resistor. I bet its worth less then a cent. . .