i Play a Ibanez Artcore guitar. If I put my tuner on my guitar and I play a tone on the bass string, like G on the E string, the Display mean to high... It is between G and G# in comparison to a Piano you can hear the difference. Could there bei a Problem with the Strings (010-046). Does someone was faced to a similare problem?
First task is to check the intonation by playing the 12th fret note fretted, and comparing it with the harmonic there. if they aren't the same, exactly, then the bridge or saddles need moving until they are.
You'll probably find that the G is in tune then, assuming the open string itself is in tune first. If this doesn't work, it may be that the neck relief is too much, and the string is being bent sharp when fretted.