As time has gone on and my diet, training habits, sobriety and lifestyle all cleared up I found to get to where I want with any cycle less has been more.
Pairing test and primo 1:1 has worked really well for me. Lean, dry, full, clear headed at 250mg/wk of test C and Primo.
This is just my experience however. I know guys that may as well have not been poking at all in that range so they have said.
My only gripe really is that there is less flexibility with lower dosages. Smashing a bagel or cheat meals means extra cardio than if I was hammering double the mg.
Lots of guys mentioned the Libido dropped with primo, never experienced this. Any time anyone ever says their sex drive is effected, I ask if they watch porn or jerk off. I haven't for years now and can say with certainty that my SD is through the roof from abstaining from porn, that includes Instagram's soft core variety. Its a spectator sport, why watch when you can play?
Try not jerking it for a few days and then see where you're at. While SHBG and E2 can be an issue, removing short term dopamine hits from your ocular diet and refusing Mrs Palmer any action can have a huge effect not to be under estimated.