Ac tripping gfci

My air conditioner caused a GFCI in my bathroom to trip. When I reset it and turn on the air conditioner, it trips every time the air conditioner starts to boot up. I have tried to tighten the screw at the breaker, reset the GFCI‘s on the line. But the GFCI is tripped after a few seconds of the AC is on. GFCI will stay on if I keep the AC off.