Hey man,

Yes I've experienced this during my PFS recovery. Especially when masturbating more than once in the same day and especially when it's to porn - both generally have a very negative effect on me. Can definitely feel like it induces a temporary crash that takes a week or so to bounce back from. Usually during that week I feel pretty asexual and my dick is extra sensitive and 'offline'. I've noticed my consciousness/energy feels lowered in general whenever I watch porn too. Again all of this clears up in 1-2 weeks.

Having said that, sometimes I have masturbated to porn with no sense of a crash, so it can be hit and miss. Ultimately, I've realized that as tempting be to have that release, taking this gamble is usually a pretty foolish choice for me and that avoiding masturbating in general is much better for my recovery. I actually went on a 30 day NoFap streak back in January-February (broken by my girlfriend) and during the 20-30 day mark I felt significantly better in all ways and I was much less along my recovery journey then than I am now - so something worth considering trying for your own recovery too.

On the contrary to all of this, having sex with my girlfriend has a healing affect and feel like it nourishes my energetically, spiritually and physically in my recovery. Again, provided it is not excessive too.