General question about buds

Hi there! With autoflowers there is so many factors that affects the final size/yield of the plant. First is genetics and the other is the stress during growth. If you have good genetics that is known to grow big plants but you stress the plant some how and stunt or slow the growth it will affect the final results. All tho people have told me that by giving the right kind of stress at right time (Topping is one good) will actually delay the flowering of autos and by doing this you will get more veg time and bigger plants!