Aggressive topspin against low backspin ball

I tried to play the drill that involves alternating slow spinny and aggressive 3rd ball attacks to various places on the table. However, I found it troubling to play fast topspins. I can play a slow loop against a push quite consistently even if the ball is low, but the aggressive topspin works only if the ball is near net height or lower. I tried to experiment with the angle of my bat, but opening it more made it even worse. How to aggressively attack a ball that is half-net height? Or it is impossible? I play with a tacky rubber, so it may count.

Hi Ilia,

To make the faster topspin off the lower ball just make the same stroke as you do with the slower topspin but increase the speed of the bat coming through.  Utilise your waist and legs a and wrist to help with this.  You still need a lot of topspin to get the ball up and down quickly over the net.