Weird Power Issue When Ac Is On.

[Kanaric]

Everything runs fine when AC is off but if the AC is on as the car is being started it won't start, like it is low on power. Also when i'm driving around when AC is on HICAS light will come on occasionally the the car drive strange with the steering being heavier.

Battery has enough charge. Could it be the alternator? Is something else possible?

As far as other detail this is a R32 GTS-T. The stock fan was replaced with electric fans one of the two electric fans turn on when the AC is on.

I have my doubts that the battery or the alternator is the issue. Used a voltmeter and battery reads 12.5 when car is off, when car is on it's 13.89

[Sinista32]

Tune and perhaps a setting in the ECU for AC is not set correctly

[Dose Pipe Sutututu]

there's a chance your A/C compressor is shot too, thus robbing loads of power from the motor