high concentration deca is FAR different than high sustanon.. sustanon is 40% short esters and short esters in normal concentration can often cause PIP but especially will be problematic at high concentration
anytime brother.. a lot of people have complaints with normal sustanon 250 in with PIP.. everyone is different on what they can and cannot tolerate but generally speaking, you get over 400 concentration with any form of test but ESPECIALLY when a short ester is involved, and there is far more often than not, going to be a lot of discomfort present
Deca 500 and sust will cause more PIP that’s prob all it is. When you you have a higher concentration of mg per ml you get more PIP. Also where are you injecting perhaps is a site issue and the amount of oil being put in?