I plan on never using Deca or Tren again, someone correct me if I am wrong but I think deca is the worst drug as far as destroying the natural test productions.
Any exogenous source of hormones will shut your natural production down, there's not one that does it "worse" than the other really. With Tren and Deca they both increase prolactin in a lot of guys, hell even just test can do that for some individuals, which will severely effect you.
It's basically like being in that suspended state right after you orgasm where there's pretty much nothing that will cause your dick to be aroused. Same thing happens, prolactin is released when males orgasm causing that to happen and when it subsides is when you can get erect again. The level released is highly individual, which is why some guys are ready to go shortly after, while others take a while.
