Less Power With A/C On

[Boxstard]

Yes I definitely feel less power with AC on, especially initial launch. Also during shift change with clutch in, rpm drops noticeably quicker. The AC effect lessened after installing underdrive pulley as expected, but still noticeable to me.

Also unlike other cars, my AC compressor clutch does not cycle on and off even the set temp is achieved, once I turn AC on it compressor is always on. I wish it cycles and also disengages at WOT so it does not drag the engine all the time less turned off. Or maybe something is not normal with my system? AC works great, takes little time to chill small cabin.