I assume that by "fast acting deca" you mean NPP - right? This might indeed solve part of your problems, but the side effects will still be there. The only difference is that you will be able to run a shorter cycle with it, which will make it easier for your HPTA to get recovered. You will be able to make recovery smoother by using the right ancillaries with your cycle (aromasin and cabergoline), and running a comprehensive PCT, such as the perfect PCT protocol - http://www.evolutionary.org/the-perfect-post-cycle-therapy-pct/