I have a love-hate"relationship" with this. Back in the days i used/abused mdpv, and it was my drug of choice. About a year ago i heard of a-pvp and tried it, before that i had been sober almost 3,5years.
I really liked a-pvp and because i am iv-user, the rush is/was unbelievable and very intense, almost scary if took too much (over 30mg) and almost psychedelic. I do not recommend that dosage to anyone, if you do not know what are you doing!
I tried to vaporize this and didn't like it at all, it made me so paranoid and shaky.
So the point is, a-pvp is pretty easy to put away and start the comedown, IF you had enough and by that i mean it is not enjoyable anymore (heart beats too fast, shaking, mild anxiety...) and you can't get that awesome rush anymore. For me it is max 10 hours and ~150-250mg binge. After that it only starts to feel boring and it doesn't give the positive effect like when i have started. Almost only the negative effects. Time limit is a good choice to make with this and for me it is always either the amount or time. Of course your mind starts to beg for more if you still have something in your stash, but i find this is easier to put down if i say to myself that i would only waste it if i took more and the comedown would be harder. So i put it down, take few quetiapines, drink some milk/protein shake and go to rest on the sofa or bed. And not take more until a week or so. I am a control freak..
But i truly understand people who become addicted to this, a-pvp is really nasty and moreish and very compulsive especially when slammed.
The hard part for me with this is the comedown, it lasts almost 5 days fading slowly, until i am back to my self and i'm antisocial, very tired. Magnesiumtaurate, vitamin D and C, omega-3 capsules, ashwagandha and a lots of fresh vegetables and fluids helps to recovery. I took about 200mg about a week ago and today i am normally functioning. Sorry for the language mistakes, im from Europe so english is not my spoken language.