Depended on my age, kind of woman and how starved I was to begin with.
At age 14, had my first encounter with a prostitute. She was hot, compared to my school girlfriends, real woman with a real, "Pornstar body". Unloaded 3 times in 15 minutes. Went, non-stop, as the deal was for a one shot session. She wanted extra, said I had cheated, was sure as hell that I had cum multiple times. This was the fastest load, shoot, reload of my life.
On the other end of the spectrum. With my ex-wife of 22 years, before divorce, a few years ago, I would be lucky to even get ready to start once a week. There was no question of being ready again. Hated the relationship, had kind of gone psychologically impotent. Fast forward, day my divorce was final. Felt great driving on route 80, euphoric. Headed out to Reno, discovered, my favorite, "The Mustang-the original", was gone (was a regular there till the early 80's). Looked at the OBR/MR, was a dump. Inquired around and got a lead to the Mound house brothels. Drove over to Kit-Kat Dr. Buzzed in at the Sage, Picked one, finished, went out, had drink, came back, same sequence at the house next door, now called LR, was BR2 back then I think. Total time not much more than an hour at both the houses.
So it all depends!
Normally my (am 53 years now) style today is, as this. Starve for a week or so, before hitting either Frankfurt, FKK's (go to Germany a lot on business) or CC.
In CC, start at MLBR, short quick party, in and out of the house within 35-40 minutes. Go over to the other side of the road, another short party, right away, either at LR or Sage. Go to motel, shower, a drink. Back for a hour plus final party. So first recovery time, I guess is 10-15 minutes, second one probably hour or less.
On the other hand at FKK's, in Frankfurt, I can do 4-5 shots with different women, in 6-7 hours. I guess the atmosphere is much better, versus a Nevada brothel, which are kind of empty. People having sex all around a person, is a big motivation factor. Also a lot of foreplay is there before the parties, sales tactic by the girls, to get a person in with them.
On another trip to Bangkok, at the "Club Eden". I had 3 shots, within 2 hours. There were two girls (all parties are threesome there), and they actively work on the guy. Real short recovery times. Recover while being massaged and pampered.
So it all depends, upon the mood/appetite of the guy and the Lady's sexual agressiveness.