Then don't go so heavy. Change your workouts by shortening the rest time between sets, slowing
the negative part of the movement and explode on the positive. Squeeze your quads as hard as you
can when you squat. You don't need a lot of weight to kill your muscles. Do drop sets, supers, listen
to your body.
...AND NEVER, EVER, LET YOUR BACK ROUND!!! Look straight up at the ceiling and kick your hips
forward. Your form sounds horrendous. Look up some videos on proper squat form.